For those unfamiliar the Dune series, the Butlerian Jihad was a crusade against “thinking machines”. Ultimately computers, and intelligent or thinking machines, even down to calculators are destroyed and banned. Humans who are trained in complex mental maths become known as Mentats, a sort of human computer. Just, uhh, leave all that shit on IX, with their Axalotl Tanks out of it.
I mean we burned witches in the dark ages right, so the behavior dates back at least as far as that.