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.
Però sobretot diu que, quan tries una cosa, deixes de triar-ne d'altres. I aquestes altres coses poden tenir aspectes interessants, que faran menys interessant el que has triat. Tercer: expectatives augmentades.