Comment by ux266478

> This guy makes it sound like he had to come up with these concepts from scratch, and it's some sort of pure visual genius rather than math. But... it's just math.

The problem with this kind of thinking is that it encourages the exact kind of teaching you disparage. It's very easy to get lost in the sauce of arbitrary notational choices that the underlying concepts end up completely lost. Before you know it, matrices are opaque self-justified atoms in an ecosystem rather than an arbitrary tabular shorthand. Mathematics is not a singular immutable dogma that dropped out of the sky as natural law, and rediscovery is the most powerful tool for understanding.