I have heard friends and acquaintances opine that President Biden is senile and suffering from dementia and therefore unable to lead.
But I recall the story of El Cid (Rodrigo Díaz de Vivar), the Spanish war hero who led his army to victory even after he was dead. The story goes that his corpse was tied to the saddle of his horse, which galloped in the front of the army. The enemy thought the great El Cid was alive and leading the attack and fled!