Body parts would probably have been one of the first things that ancient peoples gave names to, so not only do we find hundreds of cognates and permutations, but also widespread use in idioms, slang and other figures of speech. Since our bodies have been with us literally from the beginning, we can learn a lot about language by investigating their etymologies.

Researchers and casual users alike have documented that generative AI tools often struggle with negation: the language we use to express absences, untruths, and opposites. Gen AI models may be able to show you what you do want to see, but they're NOT as good at NOT giving you what you DON'T want. Read that last sentence back again and you can understand why. So, how do we understand it ourselves?