Let’s be clear: I believe Tara Reade. I believed Anita Hill, too. Remember the buttons? I wore one. What’s the constant here? Joe Biden, then the bumbling head of the Senate Judiciary Committee during the Clarence Thomas confirmation hearings, now the presumptive Democratic presidential nominee.

Long before Ms. Reade, before the reports of the rubbing and the sniffing, I interviewed an adviser to Ms. Hill, who said she’d tried to warn Mr. Biden of what was happening in the Thomas hearings — how unchecked Republicans were smearing an upright woman’s character. But “the United States Senate was still very much a boys’ club” back then, the adviser told me, and there was no getting through to him. Democratic primary voters knew all about Mr. Biden’s membership in that boys’ club when there was still time to pick someone else. Alas.

So what’s a girl to do now? Discounting Ms. Reade’s accusation and, one after another, denigrating her corroborating witnesses, calling for endless new evidence, avowing that you “hear” her, is nonsense. We are now up to four corroborating witnesses — including one contemporary corroborating witness, unearthed by Rich McHugh, who was Ronan Farrow’s producer at NBC News during the Harvey Weinstein #MeToo reporting — and one “Larry King Live” tape.