Every concert pianist knows that the surest way to ruin a performance is to be aware of what the fingers are doing. Every dancer and acrobat knows enough to let the mind go, let the body run itself. Every driver of a manual vehicle arrives at destinations with no recollection of the stops and turns and roads traveled in getting there. You are all sleepwalkers, whether climbing creative peaks or slogging through some mundane routine for the thousandth time. You are all sleepwalkers.
Well, according to game theory, you should never tell anyone when your birthday is. It's a lose-lose proposition. There's no winning strategy. (If they throw you a party) Then you don't know whether they're doing it sincerely, or if your earlier interaction just guilted them into observing an occasion they'd rather have ignored. But if you don't tell anyone, and nobody commemorates the event, there's no reason to feel badly because after all, nobody knew. And if someone does buy you a drink then you know it's sincere because nobody would go to all the trouble of finding out when your birthday isβ and then celebrating itβif they didn't honestly like you.