 Joe Biden insists that he is hale and hurry and points out that he is the only Democrat who has ever won against Donald Trump. He also insists that he has the strength and stamina to be president for the next four years, despite the fact that he is 81. The New York Times, a pro-democratic newspaper, says that Biden's stubborn insistence on remaining with the Democratic Party's presidential candidate is, as you pointed out, a strategy aimed at running out the clock.