Underwhelming article. The title is so powerful though, that this article makes the front page of HN quite often. The thing is, notation is always a tool of th

Underwhelming article. The title is so powerful though, that this article makes the front page of HN quite often. The thing is, notation is always a tool of thought. No exceptions. Take two matrices A and B. The notation AB for the matrix product is a great thinking tool. The matrix product is so strange when first seen, but the fact that it is introduced as a product, with the same notation as the product notation for scalars, makes it so much easier to grok. Imagine that we'd had used A@B, like in Python (numpy).