Acknowledgment hurts ...

President Biden at a campaign event in Harrisburg, Pa., on Sunday.

Credit...Haiyun Jiang for The New York Times

Old people don't want to acknowledge they can't do things like they use to do back in the day. Being an old geezer, I know this is true. In my case, cycling, a sport I adore but have not gotten back to riding as I don't know if this old soul can do it any more near the level I did 10 years ago. The same calculus should apply to Biden but in his case, his honest self evaluation is crucial as every time I see this guy, I see the ravages of old age at play. The old guy squint gives it away whereas "Is that Susie over there? I can't be sure but I think so." is part of Joe's persona whether he likes it or not.

A deer in headlight applies when Agent Orange gave him a new one during the debate. If he stays in, along with Harris, Trump will win, period.

President Biden issued defiant responses on Monday to high-ranking lawmakers calling for him to step aside, challenging Democrats to run against him and telling congressional Democrats in a letter that he was “firmly committed to staying in the race.”

Calling into “Morning Joe” on MSNBC, Mr. Biden said he didn’t care about any of the “big names” urging him to drop out of the race, his voice rising considerably as he spoke.

“If any of these guys don’t think I should run, run against me,” he said. “Go ahead, announce for president. Challenge me at the convention.”

No challenge, Joe did the right thing by resigning just in time. Now, the real campaign begins.