His chain of thought has a length not beyond his nose. It's typical for dementia, and I have to see it all the time with my parent. Only the very last sentence is kept in mind, all other context is mostly gone.

I wish a reporter would ask him what question he heard and answered, because I'm sure he would be unable to correctly answer.

> How would that even work? Park tanks on Wall Street and point them at stockbrokers?

People are not quite sure, but Krugamn (for one) is willing to fight:

* https://www.youtube.com/watch?v=oK20wZ0ofwY