Every sufficiently non-obscure field has crackpots. Most only see ones in their own field, but if you end up as a volunteer handling the wikipedia email queues

Every sufficiently non-obscure field has crackpots. Most only see ones in their own field, but if you end up as a volunteer handling the wikipedia email queues, you'll see them across all fields. Some fields have more crackpots and more persistent ones, I think it's an open question if that's due to to the field itself or how it's presented in the media. I'm confident that if there are frequent high profile articles on the field that talk about "unsolved problems" or "fundamental limits" that this acts like crackpot catnip.