Yeah, I'm with you very much. There's a very clear distinction between "the foundations" of programming/software development, domain-specific expertise, and lan

Yeah, I'm with you very much. There's a very clear distinction between "the foundations" of programming/software development, domain-specific expertise, and language/platform expertise. The foundational pieces are pretty much timeless; the platform pieces are ephemeral. Getting good at the foundational pieces ("the maths" as you call it) is a total game changer for being able to sit down with some new/unknown library or codebase and get to a level of understanding quickly.