[NikolaeVarius]

> But if this is really one-in-a-million stuff I really wonder how I happen to know someone who has it

Do we teach statistics in school anymore? This is such a nonsensical remark.

[Khelavaster]

That's perfectly well-grounded. If a large chunk of your acquaintances were to be predisposed to something due to selection bias, you might be in similar groups and be predisposed to similar things.