Holy fuck math textbooks are so badly written that I am called to make better math education

Y'all niggas be writing introductory set theory without defining shit

Unforgivable.

This is just unreadable garbage and I have better success writing out a list of the theorems within a field and trying to learn the proofs for those one by one.
Do you niggers actually get your introduction to math through intro textbooks, or just go back to intro textbooks once you've learned?