This not a theoretical argument. Trump regularly makes stuff up on the fly when there are multiple records proving the opposite. The White House has to make up 'alternate facts' on a pretty much daily basis to keep up.

The results are always the same: his die-hard supports believe him, and reality is altered; his opponents point it out and wonder how anyone can think he's not maniacal; and the Republican party sighs and repeats the mantra "you dance with the one that brought you".