I feel that learning about concepts from category theory is... studying good design. I wouldn't know how to measure my software engineering ability anyway, but

I feel that learning about concepts from category theory is... studying good design. I wouldn't know how to measure my software engineering ability anyway, but I do think I do write better software with that knowledge. Understanding and learning to identify more and more monads was a big threshold for me. I never write "monad" in my code, because that's not I apply this knowledge. It's knowing how to write say, an interrupt handler, so that it will compose cleanly with 3 more interrupt handlers, or in such a way that I can easily simulate my embedded system with 5 lines of javascript.