[myst1]

And five years of gluing APIs together that help get more people to click advertisements - you'd be surprised how much math you forget. Machine learning can be better for exercising math, but most company's do not want anyone doing anything new. Same goes for physical sciences in my experience. You basically get a PhD to do associates level work. Even if you know a better way, that comes after you get ten yrs experience and have authority over projects. See the first sentence of this post for a catch 22. Bleh.