Unfortunately, you will learn only when Trump is your next president. It's the American way, demonstrated perfectly by Biden in the last few days. When things bite you on the arse, you realise, too late, that you got it wrong (and, even now, he valiantly refuses to admit it). The whole of the western world outside your country knows that Biden has suffered a calamity at least as bad as the exit from Hanoi. The trick is to see it coming and do a swerve. Joe hasn't learned that lesson.