[setopt]

I definitely prefer s-exps over both xml and json myself too!

Interesting question. Much of the difficulty does stem from mentally translating back and forth between conventional notation and s-exps too, since you can’t really avoid the standard notation when reading and writing math and physics papers. And current-day math and physics notation has been optimized to some extent for the infix notation; perhaps one would have invented more expressive higher-order functions or macros to denote s-exp math if that was what everyone used for centuries.

[veqq]

> perhaps one would have invented more expressive higher-order functions or macros to denote s-exp math if that was what everyone used for centuries.

Have you ever looked into APL? It was made as a better notation for math over a decade before computers emerged.