We could do it so that when you take the two pictures, you'd have four days to change your mind, or we're doing another course where you take the two pictures and you make up your mind right away and you can never change it.
a la síntesis de felicitat. Així que aquí tenim la peça final de l'experiment. Portem tot un nou grup d'innocents estudiants de Harvard i diem, "Sabeu, estem fent un curs de fotografia,