It’s called extrapolating. Making predictions on what will happen based on what has happened.
Trump has failed to keep promises; has changed his mind frequently; has changed who he supports and what his values are constantly.
Ergo, he will be just as lousy as President.
It ain’t brain surgery (bye, Ben Carson)
Lol, no, it's called making self-serving crap up based on little or nothing in the way actual facts.