@isaackuo @cstross @Richard_Littler Maybe not quite so profitable but Graham Hancock has still made a lot of money and been given a highish profile perpetuating the same racist pseudoscience in the past few decades: https://en.wikipedia.org/wiki/Graham_Hancock

@cstross @datarama @Richard_Littler See also Great Zimbabwe (not mentioned in the article but aliens were also postulated as the origin at one point as well; anything and anyone so long as it wasn't black people):

https://en.wikipedia.org/wiki/Great_Zimbabwe