@RichInPitt I wasn’t challenging your experience, so don’t be defensive. I was only challenging your advice that linear algebra wasn’t used much outside of Math/CS.
Many engineers (perhaps yourself included) don’t realize they were using linear algebra even when they did. As an example, did you ever use Fourier analysis as an engineer? Fourier Transforms, as linear transformations, are based on linear algebra. Why functions can be expanded in a Fourier series? Why and how can they be inverted? How to calculate their components? Et cetera. The answers are all in linear algebra.