Everyone’s a doctor, a scientist, someone with inside knowledge on what makes total strangers tick.

You hear it especially when a prominent individual is forced to answer questions about his or her mental acuity. The most prominent person on Earth, President Biden, is facing those questions these days. He endured that hideous debate performance the other evening and now is being pressured to drop out of his race for re-election to the presidency.

Biden says he ain’t going to do it. He says he plans to soldier on. He says only he can defeat Donald J. Trump, which he did four years ago. A whole host of things now work in his favor: Trump’s convictions on felony counts; the nation’s economic revival; Trump’s continuing blather about The Big Lie; Biden’s ability to rally international support against the immoral Russian invasion of Ukraine.

Then the 81-year-old president stumbled badly in that debate against the consummate liar.

I’ll lay out my bias for you. Biden is not diminished to where he cannot do the job to which we elected him. Trump is patently unfit at any level one can imagine for the job he seeks. I base my assertions about Biden on what I have witnessed, albeit from a distance. I concluded long before he won the 2016 election that Trump’s professional experience and his personal proclivities render him unfit for public office.

I am going to hang with the president until he decides all by himself whether he wants to keep fighting for his job … and fighting for you and me.