 Is he telling the truth about whether he can serve a full four years? Do we want a president who could be incapacitated? There's a reason that FDR was never shown in his wheelchair. There's a reason that John F. Kennedy pretended to be a vigorous man when he was certainly not. Blame it on a cold, blame it on his stuttering, blame it on over-preparation, whatever. But he did lose. Maybe he needs to go.