That's how they make you believe, by using basic human patterns/behaviours, they don't read stars/cards/palms, they read you and make you believe they know more about you than yourself, which can be helpful in some ways if you never self reflect.
We do sort but it can be hard to know the order, if you ask whether they eat their favorite food first or last it can give you a valuable clue as to how they sort
It was also the first element in the list. Humans tend to sort by preference, often subconsciously.