I know GGP wrote about "computer scientists", but I've seen similar things spoken (even here) about software engineers - that they have "binary thinking", they "reason in ones and zeros", etc. Which infuriates me to no end, because it's hard for me to think of another domain except hard sciences that forces you to think quantitatively, in numbers and orders and probabilities. Excelling in software requires the opposite of "black and white thinking".