But one point it makes is that whenever you're choosing one thing, you're choosing not to do other things, and those other things may have lots of attractive features, and it's going to make what you're doing less attractive.
Men en pointe den fremsætter er, at hver gang man vælger en ting, vælger man ikke at gøre andre ting. Og de andre ting har måske mange attraktive egenskaber og det kommer til at gøre det man vælger mindre attraktivt. For det tredje: optrapning af forventninger.