His thought processes are completely irrational. He's constantly all over the place.
He'll ask you a question about something specific, and then when you answer him, he wants to know what your answer has to do with something y'all were discussing 45 minutes earlier.
It's almost like a learned defense mechanism that he has lost control of.
It's weird to say the least.
The powers not delegated to the United States by the Constitution, nor prohibited by it to the States, are reserved to the States respectively, or to the people