For your viewing pleasure, you can watch at the link below, Joe Biden finish a speech, then hold out his hand for a few moments to … empty space, there was no-one there to shake it, if that is what one does in these Covid days. Confused, Biden walked around the stage, before eventually finding his way off. At least he did not fall over and break his hip as many frail senile presidents across the world, do. Really, for someone suffering from dementia you would think he would have better minders, maybe even a body double for the public appearances?