To paraphrase:

> The effect: "An ideologue believes a (wrong) thing. You tell them, no. They double down. Your effort to refute has backfired." This is actually rare.

It doesn't matter, because we've all been there. We've all experienced clashes of opinion, and none of us like being wrong, so we resist adjusting.

Lots of us do it. It's a natural part of childhood. Being afraid of the dark. Believing in ghosts. Santa Clause. The Easter Bunny. The Tooth Fairy. How did you cope?

What about other aspects of belief? Religion? What aspects of religion does one regard as history? How many people remain religious in the face of contrary evidence?

Suddenly, this effect seems less rare.