After listening to Kellyann Convay, alternative facts are whatever you can make people believe. If they believe it, then it’s “true”.
If your kids believe in Santa then he’s real.
Human nature is very gullible. That’s why people in China and Russia, to a great extent, are manipulated by propaganda. Too bad we’re becoming that way. Actually we’re reverting to a sort of McCarthyism of the 1950s. It’s now called Trumpismo.