Too vain to wear reading glasses? (hat tip to Carly Simon)
Here is what happened: Beatty opened an envelope announcing Emma Stone the best actress, which is why he hesitated. Faye Dunaway said something like come on, and “read the winner” La La Land probably not noticing it was the best actress card. Someone gave the wrong card to them...probably the accountants. And no one knows the winner including the head of the Academy. Only the accounting firm knows.