- For regular programmers, most quizzed non-trivial subdomains of math are 1) number theory and 2)
*combinatorics*.
- For Quant developer interview is
~~a different game~~, but these subdomains are still highly relevant.

These math sub-domains would have remained obscure if programming as (a profession) had not become this wide spread, mainstream, lucrative (油水) and economically important. Since the 2000’s, more and more IV focus is shifted to math, largely in these two sub-domains.

#### This trend is bad news for the GTD types like Ashish/CSY, the domain experts and the managers like Shuo etc

I think some strong STEM students don’t bother with coding skill since it is less emphasized, less quizzed in school.

I suspect that in some colleges, math is regarded as more refined, more classic than coding skill in any language such as python or javascript. Coding is considered blue-collar.