Telltale signs include holding contradictory beliefs, seeing signs of nefarious intent at work and reinterpreting random events as proof of a hidden scheme.
For a few years, the founders worked in harmony together, seeking out youngsters who showed signs of magic and bringing them to the castle to be educated.
I’ve heard some folks try to dodge the evidence by saying they’re not scientists; that we don’t have enough information to act. Well, I’m not a scientist, either.