ezra klein■ç joins us now. i want to start on the first point.y way this happens, i think, is if biden is persuaded to step aside. there is no universe in which there is some essentially rebellion. >> yes, barring tragedy, it only happens at night and steps aside. >> why do you think you should step aside? let's start with that. >> i think there are two levels of this. you are asked me back in february when i began making these arguments, i felt that we had passed the point where he was able to campaign effectively . you would hear from people inside the white house that he is performing the job of the presidency just fine, but you would watch them on the trail and they were doing very few interviews, skipping the super bowl interview, he completely fumbled the press conference ■ç around the special counsel report. and it just didn't look, to me, like he was able to perform the act of the presidency. now i think it is also more substantive. i also don't really buy that the men we saw there struggling through answers in an improvisational setting,