I've never understood the whole thing about CS foundations... For the most part you're never discovering new datastructures, the rest of it is just knowing whi

I've never understood the whole thing about CS foundations... For the most part you're never discovering new datastructures, the rest of it is just knowing which data structure to pick, 50/50 dictionary/arrays, once in a while a set, and use a tree every year or two. Even then if it's an esoteric data structure you'll still use an off the shelf implementation. Even in data science it's mostly off the shelf R packages.