Scegliere costa: http://en.wikipedia.org/wiki/Search_theory
E questo costo forse ci dice qualcosa anche sul ciclo economico: http://econlog.econlib.org/archives/2010/07/the_recalculati_2.html
Ma scegliere ci rende felici: Life goals and choices have as much or more impact on life satisfaction than variables routinely described as important in previous research, including extroversion and being married or partnered. http://www.bigquestionsonline.com/blogs/heather-wax/goals-religion-and-personal-choices-can-affect-long-term-happiness
