Unlike some of the Democrats binge-drinking and panic-texting into the early hours of Friday morning, I still believe Joe Biden can defeat Donald Trump (more on this below). Yet watching Biden and Trump bumble and bluster their way through 90 minutes of tired arguments and petty insults – while the moderators sat idly by, silenced by CNN’s inexplicable decision not to fact-check or challenge the candidates -- it was impossible to escape the conclusion that our nation has failed to meet this moment. Biden’s distinguished record as a public servant and a candidate, his sincere commitment to the values of liberal democracy, and his basic decency as a human being might ultimately matter less to voters than their concerns about his frailty.