Think of the story of the neural network supposedly trained to spot camouflaged tanks, which had in fact only learned to distinguish between pictures taken at different times of day. (Because the pictures with tanks were all taken during a different part of the afternoon than the non-tank pictures.) In the same way, if something always goes together during our formative years (like being ambitious and being an asshole), our brains learn that "asshole" is part of what the word "ambitious" actually means.

That's a great example. I would have upvoted just for this.