Awesome, thanks for the recommendations! I really like the perspective from evolutionary neuroscience in **Why Only Us**, I will definitely read it. I just read [this book](http://www.allmanlab.caltech.edu/EB/Allman_Evolving_Brains.pdf), and it really piqued my interest in EN. The passage you highlight reminds me a little bit of the interplay between syntax and semantics in the definition of 'algorithms' in computer science. Language is fascinating, and certainly, it feels like it's a rich playground to try out some category theory. :)