Visualizzazione post con etichetta tim harford undercover economist. Mostra tutti i post
Visualizzazione post con etichetta tim harford undercover economist. Mostra tutti i post

lunedì 28 novembre 2016

I misteri del supermercato

Il miglior modo per imparare l’economia – quella vera, non quella sui piani cartesiani - è andare al supermercato, la miglior guida ai supermercati è il Tim Harford di “What Supermarkets Don’t Want You to Know”.
Di solito la scarsità di qualcosa ne aumenta il valore: per questo Michael Jordan è miliardario.
Per questo il sontuoso bar di fronte alla Victoria Station di Londra sforna a ritmo frenetico un numero spropositato di colazioni nell’unità di tempi… senza fare molti soldi (è il proprietario delle mura ad arricchirsi poiché la capacità di preparare colazioni non è “scarsa” mentre la felice posizione del locale sì).
Ma la scarsità non è tutto
… The scarcity power is clearly considerable, but it is not unlimited...the Dome proved a commercial disaster because uniqueness alone wasn’t enough to persuade people to pay … Businesses with scarcity power cannot force us to pay unlimited prices for their products, but they can choose from a variety of strategies to make us pay more…
Fuori da casi eccezionali, ogni commerciante si trova di fronte al classico dilemma economico: meglio raddoppiare i prezzi o le quantità vendute?
Una soluzione ottima esiste: chi fa cappuccini potrebbe esporre questo cartello:
… “‘Cappuccino, £5, unless you’re only willing to pay 5.5”…
Un tariffario del genere massimizza i guadagni del bar ed è il sogno di ogni negoziante.
Ha solo un inconveniente: non esiste nessun cliente al mondo che confesserà mai di essere disposto a pagare di più.
Non è un inconveniente gravissimo: ci sono strategie furbe che ci fanno “confessare”.
I maestri di queste strategie sono i supermercati, per questo vanno messi sotto la lente.
Di fronte ad ogni prodotto ci sarà chi è disposto a spendere 1 e chi è disposto a spendere 10: l’ arte di discernere i due soggetti fa prosperare il commercio. Non è facile vista la convenenza del cliente a simulare.
Bisogna ricorrere alle cosiddette politiche di “discriminazione del prezzo”.
Il 95% delle strane e complicate offerte in cui ci si imbatte al supermercato non sono altro che politiche di “discriminazione del prezzo”.
Servono ad estorcervi una confessione.
Il commercio equo-solidale è un ottimo modo per discriminare la clientela. Facciamo il caso della Costa Coffee…
… Costa Coffee, who in the early 2000s used to have an elegant strategy: Costa offered ‘Fair Trade’ coffee to anyone willing to pay an extra 10p…
Il supplemento di 10p dà l’impressione di essere dovuto al “fair trade” ma non è così…
… fair trade coffee allowed Costa to find customers who are willing to paya bit more if given a reason to do so…
Consumatori disposti a pagare qualcosa in più esistono già, occorre solo un pretesto per farli uscire allo scoperto!…
… By ordering a fair trade cappuccino, you sent twomessages to Costa. One message may or may not have interested them:..‘I think that fair trade coffee is a product that should be supported.’ The second message is the one that they were straining to hear: ‘I don’t really mind paying a bit extra…
Il supermercato vi dà la possibilità di “esprimervi”, in cambio voi “confessate” che siete disposti a pagare un po’ di più un kg di caffé.
Vi stanno fregando? No!: il caffé al solito prezzo è sul bancone a fianco.
Inoltre, una fetta del suo guadagno la Costa lo gira al produttore.
Moltiplicare le scelte  disponibili ha la stessa funzione…
… Starbucks isn’t merely seeking to offer a variety of alternatives to customers. It’s also trying to give the customer every opportunity to signal that they’ve not been looking at the price…
Vi stanno fregando? No!…
… Does this mean that Starbucks is overcharging all of its customers? No. If so, a regular cappuccino or hot chocolate would cost £3.30…
Vi stanno solo facendo confessare la verità!
Ci sono almeno tre strategie per capire chi sono i consumatori disposti a pagare di più.
La prima consiste nel guardarvi in faccia e capire chi siete…
…The first is what economists call ‘first degree price discrimination’, but we could call it the ‘unique target’ strategy: to evaluate each customer as an individual and charge according to how much he or she is willing to pay. This is the strategy of the used-car salesman ...cars and houses, of course, but also souvenirs in African street stalls, where the impoverished merchant will find it worth bargaining for some time to gain an extra pound.... companies are trying to automate the process…
Per questo conviene sloggarsi spesso da amazon: altrimenti capiscono che siete un maniaco dei libri e sono guai…
… for instance, supermarkets accumulate evidence of what you’re willing to pay by giving you ‘discount cards’, you allow the stores to keep records of what you buy .......internet retailers such as Amazon can identify each customer by putting a tracing device called a ‘cookie’ on her computer. In Amazon’s case, customers started to realise that if they deleted the cookies on their computers, they were offered different, often lower prices…
Sono pratiche lucrose: la segretaria ci Caprotti ha inventato la Fidaty e si è beccata 75 milioni nel testamento. Ci sarà un motivo :-).
Un’altra strategia consiste nel distinguere il cliente dallo status che segnala: turista, locale, lavoratore…
… it must be reasonable for coffee shops to offer a discount to people who work nearby, and for tourist attractions to let locals in for a lower rate? It often seems reasonable because people in groups who pay more are usually people who can afford more....But we shouldn’t forget that this is a convenient coincidence. Companies ...are interested in who is willing to pay more, rather than who can afford to pay more…
E’ chiaro che il turista paga qualsiasi prezzo: mica puo’ girare per far confronti. I lavoratori in loco invece battono la zona in cerca del meglio visto che a loro le occasioni di sperimentare non mancano: meglio per chi li tratta bene.
I caffé in piazza San Marco hanno prezzi esosi anche se i turisti che transitano da quelle parti sono per lo più della classe media. I bar di fronte alla borsa hanno prezzi normalissimi anche se frequentati da miliardari…
… the AMT coffee bar in Waterloo station in London used to knock 10 per cent off the cost of your coffee if – as I did at the time – you worked locally. ...The discount reflected the fact that local workers are price-sensitive despite being rich
La terza strategia consiste nel differenziare leggermente il prodotto
… the company has to sell products that are at least slightly different from each other. So they offer products in different quantities (a large cappuccino instead of a small one, or an offer of three for the price of two)... even in different locations…
La leggera differenza nei prodotti non fa capire se il supermercato fa rice-targeting (vi sta facendo “confessare”) o vi sta addebitando un costo reale. In genere siamo nel primo caso, anche se spesso c’è un mix delle due cose.
Al momento il “bio” fa fare molti affari (al supermercato)…
… the favoured game at the moment has to be price-gouging the natural way, riding the bandwagon of organic food. ...The supermarkets have come to the rescue with a plentiful supply of organic products that happen to be marked up far above their additional costs…
La cosa necessita giusto di qualche accorgimento
… fruit and vegetable section contains both organic and conventionally grown produce side by side … but always side by side with a completely different product. The organic bananas are next to the ‘conventional’ (that is, non-organic) apples; the organic garlic is next ...The price-comparison would be too sobering…
I fanatici bio che non vogliono rinunciare premino almeno quei commercianti che espongono le banane bio accanto alle banane normali.
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I maniaci dei supermercati, quelli che li battono palmo a palmo in tutta la città (tipo Tim Harford) sanno bene che è difficile trovare prodotti uguali a prezzi diversi. Non fidatevi di chi proclama la “convenienza” delle Coop o la qualità di Esselunga.
Una cosa di cui non si tiene conto nel fare questi confronti è la localizzazione del supermercato: quanti km siete disposti a fare per risparmiare 1 euro?
Alcuni supermercati sembrano più economici perché – conoscendo la loro clientela - mettono in vista i prodotti più economici (o detengono solo quelli)…
… it wasn’t that these products were more expensive in Tottenham Court Road than in Dalston (only the Vittel was), it was just that in Dalston cheaper substitutes sprang into view far more readily…
Al supermercato gli sconti sono onnipresenti. Bisogna rendersi conto che il modo migliore per alzare i prezzi di un prodotto consiste nel dire che gli altri sono scontati.
La qualità di un supermercato deriva solo dal fatto che punta a clienti che apprezzano la qualità e mette più enfasi su questo aspetto. Altri sottolineeranno altro, ma tutto si trova ovunque. Sapendo questo il consiglio che ne esce è ovvio…
… so here’s my advice: if you want a bargain, don’t try to find a cheap store. Try to shop cheaply. Similar products are, very often, priced similarly. An expensive shopping trip is the result of carelessly choosing…
Inutile fare 5km per spendere meno: cercate meglio dove siete ora e troverete.
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Le politiche di prezzo dei supermercati sono meglio comprensibili se ci si pone questa domanda…
… why knock 30 per cent off many of your prices twice a year, when you could knock 5 per cent off year-round?…
Come al solito la “discriminazione di prezzo” spiega bene la cosa: bisogna isolare i consumatori pigri da quelli che gironzolano continuamente tra supermercati a caccia di affari…
… one explanation is that sales are an effective form of self-targeting.  If some customers shop around for a good deal and some customers do not, it’s best for stores to have either high prices to prise cash from the loyal (or lazy) customers, or low prices to win business from the bargain hunters…
Con prezzi stabili anche il più pigro capisce dove “comprare meglio” l’asparago…
.. between two supermarkets ...it’s hard for one to be systematically more expensive than the other without losing a lot of business, so they will charge similar prices on average, but both will also mix up their prices…
Creare confusione evita la comparazione!…
… this is an example of a universal truth about supermarkets: they are full of close (or not so close) substitutes, some cheap, some expensive, and with a strong random element to the pricing. The random element is there so that only shoppers who are careful to notice…
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I grandi supermercati ci sembrano super-potenti ma non lo sono: non possono contare sulla “scarsità”.
Siamo noi a renderli potenti con la nostra pigrizia.
La discriminazione del prezzo spiega praticamente tutto quel che accade nel supermercato e quasi tutto quel che accade nei commerci in generale…
… why does popcorncost so much at cinemas?… … customers may be dumb, but they’re not that dumb. People expect to be charged a lot for wine in restaurants and for popcorn and sweets in cinemas before they walk in the door. Now we have a better answer: it’s likely to be a price-targeting strategy…
Cosa costa di più quando andiamo al ristorante? Il posto occupato al tavolo.
Ma nessuno ci addebita la cena cronometro alla mano, non sarebbe elegante.
Magari non c’è il cronometro ma ci sono altri indicatori
… one of the big costs in a restaurant business is table space. Restaurateurs would therefore like to charge customers for dawdling, but because they cannot do that, they charge higher prices for products that tend to be consumed in longer meals: not just wine but also starters and desserts…
Capita di vedere certi prodotti estremamente spartani. Perchè tanta poca cura?
A volte la qualità è abbassata dal produttore con intenti che non sono affatto quelli di risparmiare sui costi. Perché lo fa allora?
Discriminazione di prezzo, ovviamente. Non è sempre facile spingere chi potrebbe pagare di più a farlo, e far abbassare l’appeal dell’alternativa è un modo efficace. Ci sono esempi storici nei trasporti di prima e seconda classe…
… French economist Emile Dupuit pointed to the early railways as an example: It is not because of the few thousand francs which would have to be spent to put a roof over the third-class carriage or to upholster the third-class seats that some company or other has open carriages with wooden benches … What the company is trying to do is prevent the passengers who can pay the second-class fare from travelling third class; it hits the poor, not because it wants to hurt them, but to frighten the rich…
Le sale d’aspetto scadenti di certi aeroporti potrebbero essere un esempio.
Il supermercato non è da meno: l’imballaggio di certi prodotti sembra urlare “faccio schifo!… non comprarmi!”. In altri casi il design è repellente e non costerebbe certo di più migliorarlo.
Questo è anche il motivo per cui ordinare un normalissimo cappuccino da Starbucks puo’ diventare un’impresa…
… Starbucks offers a splendid example: the world’s most famous coffee company will serve you a better, stronger cappuccino if you want one, and they will charge you less for it. ... why does this cheaper, better drink – along with its sisters, the short latte and the short coffee – languish unadvertised? The official line from Starbucks is that there is no roomon the menu board… price targeting provides a far more convincing answer: while some companies make their cheap products look unattractive, Starbucks simply makes them invisible to those who don’t ask around
Anche i ricchi potrebbero bere il loro eccellente (ed economico) cappuccino, e questo è un pericolo: vanno depistati.
Ma discriminare i clienti puo’ essere pericoloso: chi paga meno potrebbe rivendere a chi paga di più tagliando fuori il negoziante. Capita con le medicine, i dischi e i prodotti digitali. In questo modo anche i consumatori più pigri ricevono un premio a discapito del negoziante.
Si corre ai ripari in qualche modo…
… the DVD industry agreed on a system of regional coding so that DVDs bought in the United States would not work in Europe…
Ma la discriminazione di prezzo è cosa buona? Qui si realizza un paradosso…
… the same popular opinion that despises the DVD industry for trying to sell their products at different prices in different markets also believes that the big pharmaceutical companies should supply drugs to poor countries at discounted prices…
In genere la discriminazione di prezzo è un bene. Ecco un esempio:
… imagine a hypothetical pharmaceutical company called PillCorp, which has developed a uniquely powerful new treatment for HIV/ AIDS. Assume that it doesn’t engage in any price-targeting and charges the same price across the globe… that looks like bad news. PillCorp is using its scarcity power to charge a high price for a life-saving drug. As a result, people in poor countries don’t get the drug… PillCorp could be making more money and serving the world better.... a taxi driver in Cameroon might be willing to pay only $50 a year for treatment;l... Because of PillCorp’s global price policy, the taxi driver loses out on the treatment, and PillCorp loses out on the chance to make some profit. But if PillCorp were able to make a onetime discount to the taxi driver ... That is what economists mean when we say a situation ‘could be better’
Quanti più affari fa “Big Pharma”, tanto meglio sta il mondo! E in questo la discriminazione di prezzo aiuta.
E lo stesso, naturalmente, dicasi per i supermercati.
Ma facciamo un altro esempio che ha la virtù d’instillare qualche dubbio…
… consider another hypothetical organisation, TrainCorp, a passenger train company. TrainCorp owns a train that always travels full. Some of the seats go at a discount of £50 to leisure travellers who booked in advance, to senior citizens, to students or to families. The other tickets cost the full price of £100… We know at once – if we are economists – that this is inefficient. In other words, we can think of something that would make at least one person better off without making anyone else worse off. That something is to find a commuter who was willing to pay a little less than £100, say £95, and who decided to travel by car instead, and offer him a seat for £90. Where does the seat come from, since the train is full? Well, you take a student who is in no great hurry and was willing to pay a little more than £50, say £55, for the seat and politely throw him off the train. .... But of course, that’s not what happens, because if TrainCorp tried it, commuters who were willing to pay £100 would hang around for the £90 tickets… summary: the group price-targeting strategy is inefficient because it takes seats away from customers who are willing to pay more, and gives them to customers who are willing to pay less. .......individual price-targeting isn’t feasible…
Si noti però che in casi del genere  l’inefficienza deriva dalla discriminazione di prezzo per gruppi. Detto in altri termini: la discriminazione è troppo poca, andrebbe raffinata ulteriormente.
Perché certi libri escono prima nella versione più costosa con la copertina rigida e poi in formato tascabile? Per discriminare i clienti impazienti (e disposti a pagare di più dagli altri). La discriminazione spiega tutto, come al solito.
La discriminazione produce sia del bene (anche i più poveri potranno leggere il libro) e del male (l’appassionato è spremuto come un limone).
Se i supermercati potessero leggere nella vostra mente (ovvero potessero praticare una discriminazione perfetta) il mondo sarebbe un posto migliore?
Lascio in sospeso la risposta, avremo modo di riparlarne.
Wahol_large-10 cans

giovedì 3 marzo 2016

3 Perfect Markets and the ‘World of Truth’ - The Undercover Economist by Tim Harford

3 Perfect Markets and the ‘World of Truth’
Note:La verità: la preferenza rivelata dai comportamemti.La sincerità conduce all' efficienza: le tasse sono un' interferenza nel mondo della verità. ovvero cambiano i comportamenti e impediscono alle preferenze di emrrgereI prezzi informano x' sono pagati volontariamentePrezzo + competitività => verità precisaCompetenze nella scuola pubblica e nella scuola privataLiberismo e verità: metti i soldi dove metti la lingua (la doppia funzione dei prezzi)Tassa ottima: lump tax (impraticabile di fatto)

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3@@@@@@@@@@@@@@preferenza rivelata ...comportamentismo.interiorità...olimpiade...ipocrisia...fisco ideale

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Consider the film Liar, Liar, which tells the story of Fletcher Reede. As a result of his son’s birthday wish, Fletcher Reede finds that he is compelled to tell the truth for twenty-four hours. This is problematic for Fletcher because he is a lawyer – or a liar, as his son understands it
Note:LIAR LIAR CON JIM CARREY....HOMO BHYPOCRITUS

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free markets are just like Fletcher Reede’s son – they force you to tell the truth.
Note:MACCHINA DELLA VERITÀ

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we will discover that a world of truth leads to a perfectly efficient economy,
Note:LA VERITÀ È EFFICIENTE

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As we’ll see, taxes are like lies: they interfere with the world of truth.
Note:LE TASSE. DEMONIETTO MENZOGNERO

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So, let’s buy a cappuccino in the world of truth.
Note:UN CAPPUCCINO NEL MONDO DELLA VERITÀ.....DISCRIMINAZIONE DI PREZZO

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‘What’s the most you’re willing to pay for this coffee?’
Note:SCANNER

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‘How much did those coffee beans cost?’
Note:Cccccccx

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more killer question:
Note:LA DOMAMDA CHIAVE

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‘Are any other places within thirty yards selling coffee like this?’
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Prices are optional, which means they reveal information
Note:Tttttttttt

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There’s a basic truth incorporated into any system of prices. That truth comes from the fact that stores and consumers do not have to buy or sell at a given price – they can always opt out.
Note:OPT OUT

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Now you can begin to see why I say that prices ‘tell the truth’ and reveal information. In a free market, all the buyers of coffee would prefer to have coffee than the money the coffee cost, which is shorthand for saying they prefer coffee to whatever else they might have spent 60p on.
Note:COSTO OPPORTUNITÀ

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anything that is paid for outside the market – for example, the Olympic Games in London in 2012. The Games will cost around £10 billion, most of which will come from taxpayers. Maybe this is a good use of money, and maybe not. It’s not clear how we find out.
Note:FUORI DAL MERCATO. NEBBIA.....OLIMPIADI

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Perfect markets: the truth, the whole truth and nothing but the truth
Note:Tttttttttttt

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the price is not conveying a vague fact (‘this coffee is worth 60p, or more, to the buyer, and it cost the coffee bar 60p, or less’) but a precise truth (‘this coffee cost the coffee bar exactly 60p’).
Note:FATTO VS VERITÀ....VERITÀDI PREFERENZA + VERITÀ DI COSO

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Companies are making things the right way. Any company that wastes resources, over-produces or uses the wrong technology will go out of business.
Note:INFO => EFFICIENZA...VERITÀ

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IL PREZZO GIUSTO

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Things are being made in the right proportions. If too much coffee were being produced, manufacturers would cut prices;
Note:QUANTITÀ

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Things are going to the ‘right’ people. The only people who buy products are the people who are willing to pay the appropriate price.
Note:A CHI

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you can’t get more efficient than a perfectly competitive market.
Note:SPRECO ZERO

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Life without markets
Note:Ttttttttttttt

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the non-market system also has some disadvantages. For instance, if a police officer is rude or incompetent, you don’t have the option to shop for a different police force. If you think that the level of police protection you receive is excessive, it’s not up to you to cut back a bit. Neither can you spend more if you decide that you’d like extra service. No, you have to lobby your local politicians and hope they consider your demands.
Note:NO EXIT STRATEGY

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Government-provided schooling is another example of a non-market service that many of us use.
Note:ESEMPI SCUOLA E POLIZIA

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In Britain, government-run religious schools often have the best academic records, so atheists take their children to church every Sunday in order to get good references from priests and get their children into these schools.
Note:DISTORSIONE ATEI IN CHIESA...UN ESEMPIO D IPOCRISIA DA CARENZA DI MERCATO

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It seems that there is a willingness to pay for good schools, and we see it emerge because house prices are higher in the areas of schools with the best reputation. The non-market system, which gives preference to local children, channels the money that parents are willing to pay for a good school into the hands of property owners near existing good schools. This hardly seems sensible. A market system would simply direct the money to pay for more good schools.
Note:L IMMOBILIARISTA E LA SCUOLA

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The signalling function of prices
Note:Ttttttttttt

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In a market system, prices provide a way of deciding who gets to enjoy a limited supply of schools: whoever pays most gets to send their children to the best schools, an uncomfortable state of affairs, which the government-school system is designed to prevent. But prices also give the signal to build more schools, hire more teachers or raise their wages if they’re in short supply, and buy better materials. In the longer term, a price system will transform a high willingness to pay for good schools into a lot of good schools, just as surely as it will transform a high demand for coffee into a lot of cappuccino.
Note:COSTRUIRE NUOVE SCUOLE?

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The difficulty is that politicians hear that we want good schools, but they also hear that we want more police on the streets, a better health service, lots of big roads, excellent welfare benefits, low taxes and a double-shot caramel Venti latte. It’s easy for us to demand all of these things, but prices, by forcing us to put money where our mouths are, uncover the truth. Taxes have their advantages, but many don’t contribute to truth
Note:LE TASSE SPINGONO A MENTIRE

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Efficiency versus fairness: can we handle the truth?
Note:Tttttttttttt

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it’s hardly surprising we sometimes prefer the cosy white lies: it is expensive, for example, to heat the house of an elderly lady in Middlesbrough, but we may prefer to subsidise the fuel, not wanting her to face the truth of that expense.
Note:BUGIE BIANCHE

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Why are taxes inefficient? Because they destroy the information carried by prices
Note:IL VULNUS DELLE TASSE

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Cost of cappuccino: 60p Price of cappuccino in perfectly competitive market: 60p Price of cappuccino after tax: 66p Willingness to pay for cappuccino: 63p Cappuccino sold: none Tax raised: zero
Note:ESEMPIO DI DISTRUZIONE VERITÀ

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Taxes are often higher when price-sensitivity is low. For example, the government charges high taxes on petrol and cigarettes, not for environmental and health reasons but because people who buy these products need to drive and are addicted to smoking;
Note:IL FUMATORE TARTASSATO

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(If you think that taxes on petrol are motivated by environmental concerns, think again: despite the environmental impacts of air travel, electricity and domestic heating, 90 per cent of all ‘environmental’ taxes in the UK in 2009 were paid by motorists.)
Note:L AUTOMOBILISTA TARTASSATO..m..AMBIENTALISTA ILLUSO

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Can we enlist markets to help with fairness?
Note:Ttttttttt

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He proved that not only are all perfect markets efficient, all efficient outcomes can be achieved using a competitive market, by adjusting the starting position.
Note:ARROW

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instead of interfering with the markets themselves, the trick is to adjust the starting blocks by making lump-sum payments and levying onetime taxes.
Note:TASSARE I TALENTI. COME SPOSTARE I BLOCCHI DI PARTENZA AI 100METRISTI A SECONDA DEL LORO TALENTO...NN TASSE SUL LAVORO MA SULLA NATURA

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a lump-sum tax doesn’t affect anybody’s behaviour, because there is nothing you can do to avoid it.
Note:IL BELLO DELLA LUMP TAX

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an example of lump-sum redistribution would be to give £500 to everybody whose name starts with H, a policy for which I would be happy to vote.
Note:ES. SI LUMP TAX

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The implication is that in a world of perfect markets, the only thing needed to ensure both fairness and efficiency is a ‘head start’ strategy: a programme of appropriate lump-sum taxes and subsidies that puts everyone on an equal footing.
Note:IL MONDO IDEALE...MA È POSSIBILE?

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The question is, can this be done in practice?
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Impractical examples
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political philosopher Robert Nozick deployed a famous argument against taking a view of ‘justice as fairness’.
Note:O DUBBI DI NOZICK

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Chamberlain’s talents made him wealthy; Nozick felt this was ‘just’ because Chamberlain’s wealth was the outcome of legitimate decisions by fans happy to pay to see him play. The situation may have been ‘just’ in Nozick’s sense of the word, but can any situation that leads to a highly unequal distribution of cash be considered ‘fair’?
Note:CASO CHMBERLIN

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Thanks to Kenneth Arrow, we now know that, when faced with a modern-day sports star like Tiger Woods, the solution is to levy a one-time lump-sum tax of several million dollars on him.
Note:TIGER WOOD....SOLUZIONE TASSA SUL TALENTO

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President Franklin Roosevelt introduced an income tax rate of 79 per cent, but the threshold was so high that the tax was paid by only John D. Rockefeller.
Note:FALLIMENTO DELLA TASSA SUI REDDIT

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we shouldn’t abandon the head start theorem quite yet. While we can’t always use lump-sum taxation and redistribution, we can sometimes:
Note:CONCLUSIONE

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A practical example
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Ttttttttttt

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In a typical winter in Britain twenty-five thousand old people die as a result of inadequate heating. To address this concern, domestic fuel is subject to lower taxes than many other things.
Note:IL TIPICO PROBLEMA E LA SOLUZIONE SBAGLIATA

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Because customers cannot easily cut down on fuel consumption, they are not very sensitive to the price of domestic fuel, hence the government should levy a bit more tax on fuel and a bit less on other goods: customers would not change their behaviour much and so the inefficiency would be small.
Note:TASSARE LA RIGIDITÀ E SUSSIDIARE I POVERETTI

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The simple policy remedy is to raise fuel tax but give extra money to the elderly, money that they could use to switch that heating on and stay warm.
Note:+ REDSISTRIBUZIONE

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The lesson of the head start theorem is that when a problem arises, it’s worth asking whether the problem can be addressed by rearranging the starting blocks rather than interfering with the race.
Note:LAVORA SULLA PARTENZA NN SULLA GARA...TASSA LA NATURA NN LO SFORZO

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mercoledì 24 febbraio 2016

2 What Supermarkets Don’t Want You to Know

Undercover Economist’ di Tim Harford - 2 What Supermarkets Don’t Want You to Know
  • The scarcity power is clearly considerable, but it is not unlimited...the Dome proved a commercial disaster because uniqueness alone wasn’t enough to persuade people to pay enough to cover the vast costs of its construction
  • Businesses with scarcity power cannot force us to pay unlimited prices for their products, but they can choose from a variety of strategies to make us pay more. ... .
  • They could simply double the price of a cappuccino. Some people would pay the new price, but many would not.
  • Alternatively, they could cut prices and sell much more coffee.
  • That’s the dilemma: higher margins per cup, but fewer cups; or lower margins on more cups....by charging 60p to people who are not willing to pay more and £5 to people who are willing to pay a lot to enjoy the coffee and the view.
  • How to do it, though? Have a price list saying, ‘Cappuccino, £5, unless you’re only willing to pay 60p’?... coffee bars have to be more subtle.
  • Costa Coffee, who in the early 2000s used to have an elegant strategy: Costa offered ‘Fair Trade’ coffee to anyone willing to pay an extra 10p.
  • Charging an extra 10p gave the impression that that was the cost of the fair trade coffee, but a customer who reached that conclusion would have been wrong.
  • But why was it profitable to charge a higher mark-up on the cost of production on fair trade coffee than on normal coffee? ... The reason has nothing to do with fair trade at all: it’s because fair trade coffee allowed Costa to find customers who are willing to pay a bit more if given a reason to do so. By ordering a fair trade cappuccino, you sent two messages to Costa. One message may or may not have interested them:..‘I think that fair trade coffee is a product that should be supported.’ The second message is the one that they were straining to hear: ‘I don’t really mind paying a bit extra.’
  • Starbucks isn’t merely seeking to offer a variety of alternatives to customers. It’s also trying to give the customer every opportunity to signal that they’ve not been looking at the price.
  • Does this mean that Starbucks is overcharging all of its customers? No. If so, a regular cappuccino or hot chocolate would cost £3.30,
  • There’s one born every minute: two ways to find him
  • There are three common strategies for finding customers who are cavalier about price.
  • The first is what economists call ‘first degree price discrimination’, but we could call it the ‘unique target’ strategy: to evaluate each customer as an individual and charge according to how much he or she is willing to pay. This is the strategy of the used-car salesman ...cars and houses, of course, but also souvenirs in African street stalls, where the impoverished merchant will find it worth bargaining for some time to gain an extra pound.... companies are trying to automate the process
  • For instance, supermarkets accumulate evidence of what you’re willing to pay by giving you ‘discount cards’, you allow the stores to keep records of what you buy .......internet retailers such as Amazon can identify each customer by putting a tracing device called a ‘cookie’ on her computer. In Amazon’s case, customers started to realise that if they deleted the cookies on their computers, they were offered different, often lower prices.
  • it must be reasonable for coffee shops to offer a discount to people who work nearby, and for tourist attractions to let locals in for a lower rate? It often seems reasonable because people in groups who pay more are usually people who can afford more....But we shouldn’t forget that this is a convenient coincidence. Companies ...are interested in who is willing to pay more, rather than who can afford to pay more.
  • when I raise the price, how much do my sales fall? ...Economists tend to call this ‘own-price elasticity’... Tourists visiting Florida are less price-sensitive than locals... Being rich is sometimes connected with being insensitive to prices, but not always.
  • The AMT coffee bar in Waterloo station in London used to knock 10 per cent off the cost of your coffee if – as I did at the time – you worked locally. ...The discount reflected the fact that local workers are price-sensitive despite being rich.
  • The third way: turkeys voting for Christmas
  • the company has to sell products that are at least slightly different from each other. So they offer products in different quantities (a large cappuccino instead of a small one, or an offer of three for the price of two)... even in different locations,
  • Because the products are different, you never quite know whether the firm is using a price-targeting trick or merely passing on added costs. ... If it looks like price-targeting, it probably is.
  • How far would you walk to save 30p?
  • It was harder to find examples of identical products selling for different prices, although by no means impossible. Does this mean that Sainsbury’s doesn’t price-target as much as M&S? Not at all.
  • It wasn’t that these products were more expensive in Tottenham Court Road than in Dalston (only the Vittel was), it was just that in Dalston cheaper substitutes sprang into view far more readily.
  • Price-gouging the natural way
  • It’s also good business to offer discounts to the elderly and to students (translation: charge higher prices to people likely to have jobs).
  • The favoured game at the moment has to be price-gouging the natural way, riding the bandwagon of organic food. ...The supermarkets have come to the rescue with a plentiful supply of organic products that happen to be marked up far above their additional costs
  • fruit and vegetable section contains both organic and conventionally grown produce side by side … but always side by side with a completely different product. The organic bananas are next to the ‘conventional’ (that is, non-organic) apples; the organic garlic is next ...The price-comparison would be too sobering.
  • My recommendation, if you are convinced of the merits of organic food, is not to let food retailers exploit your enthusiasm: vote with your wallet by supporting any retailer – or direct supplier – who brings the price of organic and non-organic food closer together.
  • Bargain shopping and bargain stores
  • Wholefoods ...On hearing this, people would comment on how wonderful the store is... But my acquaintances also complain about how expensive Wholefoods is. But … is it really expensive?
  • Safeway just five blocks away, a store known to the locals as ‘Soviet Safeway’ because of the small range of products and the harsh decor.
  • when you compare the prices for the same goods, Wholefoods is just as inexpensive as Safeway.
  • That doesn’t quite fit with our common-sense belief that some places are cheap and some places are expensive. But that belief never made much sense.
  • Wholefoods is more fun to shop in... Wholefoods is not expensive in the sense that it charges more for the same goods. It is expensive because of where its price-targeting policies are focused: prices for the basics may be competitive, but the selection in Wholefoods is aimed at customers with a different view of what ‘basics’ are.
  • So here’s my advice: if you want a bargain, don’t try to find a cheap store. Try to shop cheaply. Similar products are, very often, priced similarly. An expensive shopping trip is the result of carelessly choosing
  • Mix it up!
  • Another very common pricing strategy is sale pricing. ...But why knock 30 per cent off many of your prices twice a year, when you could knock 5 per cent off year-round?
  • One explanation is that sales are an effective form of self-targeting.  If some customers shop around for a good deal and some customers do not, it’s best for stores to have either high prices to prise cash from the loyal (or lazy) customers, or low prices to win business from the bargain hunters.
  • if prices were stable, then surely even the most price-insensitive customers would learn where to get particular goods cheaply.
  • two supermarkets ...it’s hard for one to be systematically more expensive than the other without losing a lot of business, so they will charge similar prices on average, but both will also mix up their prices.
  • The price-targeting strategy only works because the supermarkets always vary the patterns of their special offers, ...is too much trouble to ....comparing the price of each good
  • But this is an example of a universal truth about supermarkets: they are full of close (or not so close) substitutes, some cheap, some expensive, and with a strong random element to the pricing. The random element is there so that only shoppers who are careful to notice,
  • Reality check number one: does the company really have scarcity power?
  • When we talk about big companies it is easy to get carried away with notions of how they are infinitely powerful ...often that scarcity is something we give them through our own laziness.
  • what is the answer to the question we posed in the previous chapter: why does popcorn cost so much at cinemas?
  • Customers may be dumb, but they’re not that dumb. People expect to be charged a lot for wine in restaurants and for popcorn and sweets in cinemas before they walk in the door. Now we have a better answer: it’s likely to be a price-targeting strategy.
  • one of the big costs in a restaurant business is table space. Restaurateurs would therefore like to charge customers for dawdling, but because they cannot do that, they charge higher prices for products that tend to be consumed in longer meals: not just wine but also starters and desserts.
  • Reality check number two: can the company plug leaks?
  • sometimes it is more difficult to prevent the price-insensitive customers from buying the cheaper one. Some of the most extreme examples come from the travel industry: travelling first class by train or air is much more expensive than buying a standard ticket, but since the fundamental effect is to get people from A to B, it may be hard to wring much money out of the wealthier passengers.
  • French economist Emile Dupuit pointed to the early railways as an example: It is not because of the few thousand francs which would have to be spent to put a roof over the third-class carriage or to upholster the third-class seats that some company or other has open carriages with wooden benches … What the company is trying to do is prevent the passengers who can pay the second-class fare from travelling third class; it hits the poor, not because it wants to hurt them, but to frighten the rich …
  • The shoddy quality of most airport departure lounges across the world is surely part of the same phenomenon.
  • In the supermarkets, we see the same trick: products that seem to be packaged for the express purpose of conveying awful quality. ... It wouldn’t cost much to hire a good designer and print more attractive logos.
  • Starbucks offers a splendid example: the world’s most famous coffee company will serve you a better, stronger cappuccino if you want one, and they will charge you less for it. ... why does this cheaper, better drink – along with its sisters, the short latte and the short coffee – languish unadvertised? The official line from Starbucks is that there is no room on the menu board,
  • Price targeting provides a far more convincing answer: while some companies make their cheap products look unattractive, Starbucks simply makes them invisible to those who don’t ask around.
  • The first ‘leak’ in a price-targeting strategy, then, is that rich customers may buy cheap products, unless the products are deliberately sabotaged.
  • The second ‘leak’ is ...that the customers who are being offered a discount buy the product and then resell it at a profit to the customers who are being charged a higher price. ... some products are inherently leaky: they’re expensive, easy to transport and non-perishable. The obvious examples are digital goodsmusic, video and software – and pharmaceuticals.
  • For instance, the DVD industry agreed on a system of regional coding so that DVDs bought in the United States would not work in Europe.
  • the same popular opinion that despises the DVD industry for trying to sell their products at different prices in different markets also believes that the big pharmaceutical companies should supply drugs to poor countries at discounted prices.
  • When price-targeting is a good thing
  • Imagine a hypothetical pharmaceutical company called PillCorp, which has developed a uniquely powerful new treatment for HIV/ AIDS. Assume that it doesn’t engage in any price-targeting and charges the same price across the globe.
  • That looks like bad news. PillCorp is using its scarcity power to charge a high price for a life-saving drug. As a result, people in poor countries don’t get the drug.
  • PillCorp could be making more money and serving the world better.... a taxi driver in Cameroon might be willing to pay only $50 a year for treatment;l... Because of PillCorp’s global price policy, the taxi driver loses out on the treatment, and PillCorp loses out on the chance to make some profit. But if PillCorp were able to make a onetime discount to the taxi driver ... That is what economists mean when we say a situation ‘could be better’.
  • This assumes the cheap pills don’t ‘leak’ back, which in practice is a massive concern for pharmaceutical companies. .....Americans buy prescription drugs from across the border in Canada – a practice that can be illegal but is typically tolerated. Perhaps it is the Canadian policymakers who should worry: if the leakage becomes unbearable, the risk is that drug companies will simply refuse to offer discounts to Canada any more.
  • When price-targeting is a bad thing
  • Consider another hypothetical organisation, TrainCorp, a passenger train company. TrainCorp owns a train that always travels full. Some of the seats go at a discount of £50 to leisure travellers who booked in advance, to senior citizens, to students or to families. The other tickets cost the full price of £100
  • We know at once – if we are economists – that this is inefficient. In other words, we can think of something that would make at least one person better off without making anyone else worse off. That something is to find a commuter who was willing to pay a little less than £100, say £95, and who decided to travel by car instead, and offer him a seat for £90. Where does the seat come from, since the train is full? Well, you take a student who is in no great hurry and was willing to pay a little more than £50, say £55, for the seat and politely throw him off the train. .... But of course, that’s not what happens, because if TrainCorp tried it, commuters who were willing to pay £100 would hang around for the £90 tickets,
  • summary: the group price-targeting strategy is inefficient because it takes seats away from customers who are willing to pay more, and gives them to customers who are willing to pay less. .......individual price-targeting isn’t feasible.
  • this book was published in hardcover at a high price, and then the paperback edition emerged later, at a lower price. The aim is to target a higher price at people impatient to hear what I have to say and at libraries. One good result is that the publisher will be able to sell paperbacks more cheaply, because some costs will be offset by the hardcover sales, and so the book will reach more people. One bad result is that the early version is much more expensive than it would be if there was only a single paperback edition, and some buyers will be put off.
  • What if you had all the information you needed to never miss a sale? Would the world be a better place?...Can we say anything more generally about when private greed will serve the public interest? For the answers to all these questions, and more … read on.
continua

lunedì 3 agosto 2015

The Undercover Economist by Tim Harford - Il prezzo


Tim Harford spiega come discriminare i clienti per massimizzare i profitti.
  • Tema: l'elasticità della domanda ai prezzi... 
  • Come sfruttare la scarsità? Raddoppiare i prezzi o raddoppiare le quantità? Ci sono tante strategie. L'ideale sarebbe dividere i clienti: quelli disposti a pagare qlcs in + e gli altri, dopodichè bastonare i primi. Ma nn si può farlo esplicitamente. Come fare? Con la tecnica del bundle: allego qlcs a prezzo di costo al prodotto e aumento il ricarico dello stesso. Chi era al limite continuerà ad acquistare il singolo prodotto ma molti acquisteranno il bundle (facendomi realizzare ricarichi + elevati). Spesso lo si fa nel settore dell'equo solidale... 
  • Quando le alternative di menù sono molte alcune nascondono il bundle. Quando la misura della bibita varia molte nascondono il bundle... 
  • Strategie x discriminare il cliente: 1) intuito e lunghe contrattazioni (casbah)2) tracciare la storia del cliente 3) fare politiche di gruppo (es. far pagare meno i bimbi e gli anziani). Le prime 2 politiche sono viste molto male ma lo scopo finale è lo stesso... 
  • Ma la strategia + usata è la differenziazione dei prodotti (x quantità, x servizio, x caratteristiche) x cui il consumatore nn può sapere se sotto ci sono politiche di prezzo o autentica differenziazione... 
  • A volte il bundle si combina con la disposizione sugli scaffali: un distributore non cambia i prezzi nei suoi vari supermercati ma mette in evidenza i le varietà + costose nei quartieri lussuosi e viceversa... 
  • Recentemente il cibo organico ha consentito una nuova ondata di differenziazione dei prodotti con ricarichi doppi ingiustificati...... 
  • Molti supermercati ci appaiono cari quando nn lo sono. La cosa dipende dalla presentazione della merce e ci dice molto della clientela più che del supermercato in sè. Consiglio: vuoi risparmiare? Non cercare altri supermercati con viaggi inutili. Cerca meglio all'interno del tuo supermercato.. 
  • Xchè i "compara prezzi" di internet nn hanno preso piede? Xchè la differenziazione dei prodotti x discriminare i clienti sono la norma, così come i mix di alternative... 
  • Saldi. Più che uno sconto sono una strategia di prezzo x distinguere tra clienti e creare un mix di prodotti ideale x la clietela. I prezzi nn possono essere stabili altrimenti i clienti ti prendono le misure... 
  • Difficile che un supermercato sia più caro di un altro di solito ci si differenzia x mix di prezzi volatili...
  • Conclusione: la discriminazione dei prezzi spiega il 95% di quel che osserviamo nell'economia reale. Meglio imparare alla svelta cosa sia.
continua

sabato 1 agosto 2015

The Undercover Economist by Tim Harford - Il valore


Tim Harford sulla nozione di valore
  • Tema: il valore. Come si fanno i soldi sul mercato? Scarsità + richiesta... 
  • Il potere dela scarsità richiesta: sul mercato guadagnano solo consumatori e monopolisti... 
  • Vuoi sapere se sei sfruttata? Controlla di che genere è il monopolio che realizza quei profitti x cui paghi... 
  • Perchè i pop corn costano di più al cinema? Perchè è lì che i consumatori li vogliono mangiare! Location location location... 
  • Chi paga la regolamentazione sulla sicurezza? I consumatori + deboli (i prodotti ideali x loro nn si trovano) o + attenti (i prodotti ideali x loro costano di più). Premiato il consumatore facoltoso e distratto... 
  • Gang e Mafia: la violenza crea monopoli. la violenza può essere condannata x motivi etici oppure x' rovina il gioco della competozione e quindi dell'efficienza... 
  • Oltre alla violenza ci sono altri modi x eliminare la competizione. Per esempio attraverso i sindacati. Recentemente il metodo è entrato in crisi poichè la competizione è internazionale mentre i sindacati nazionali. Altre volte padroni donamici in espansione e monopsonisti distruggono i sindacati penalizzandoli. Ci sono forme occulte di sindacalizzazione: albi, formazione, patenti... 
  • Immigrazione. Gli immigrati ci rubano il posto? Di solito l'immigrazione è vista male dalla popolazione + rozza e bene dalla pop. + raffinata. E nn certo xchè i + rozzi giudichino rozzamente... 
  • L'analisi standard: il razzismo è frutto dell' ignoranza, tanto è vero che alligna tra le classi + basse che si oppongono all'immigrazione. L'analisi corretta: vista la matura migratoria è normale che ad opporsi siano le classi basse ma x una questione fi interessi nn di razzismo... 
  • La scienza economica è neutrale? Spesso no: il mezzo di analisi influenza il giudizio che diamo del mondo. Gli economisti lottano contro i protezionismi e i sindacati ma lo fanno in nome delle ipotesi sottostanti ai loro modelli..