 because he looks so much like my husband, and while it's not possible to diagnose someone from a TV screen, this felt like a condition, not an episode, as Congresswoman Pelosi put the distinction. Whether Mr. Biden's fit to run and serve now is one debatable question. Whether this fitness will continue is not debatable. It will not. I loved my husband, and I've loved our president. Aging shouldn't change our love, but it changed what I could ask of my husband, and it changes what we can ask of our president.