True. But the OP is asking for advice on what to do next. It's hard to take any action on "for all I know". Based on population counts, knowledge of business m

True. But the OP is asking for advice on what to do next. It's hard to take any action on "for all I know". Based on population counts, knowledge of business math is useful to many more people than knowledge of K-theory. While tensors, eigenvectors, etc. are important for my daily life, the are as behind-the-scenes as plumbing, materials engineering, and farming; that is, I benefit from people with that knowledge, though I know almost nothing about them.