If something comes along that you don't like, there are a few sort of four-letter words that you can use to push it out of the sphere of discussion. If you were in a bar downtown, they might have different words, but if you're an educated person what you use are complicated words like "conspiracy theory" or "marxist." it's a way of pushing unpleasant questions off the agenda so that we can continue in our own happy ideology.
Gnomes live ten times faster than humans. they're harder to see than a high-speed mouse. that's one reason why most humans hardly ever see them. the other is that humans are very good at not seeing things they know aren't there. and, since sensible humans know that there are no such things as people four inches high, a gnome who doesn't want to be seen probably won't be seen... wings.