I started another linear algebra, this time with Trevor Bazett. He explained vector spaces in a way I never heard. Now I understand how addition and multiplication of vectors lead to vector spaces. These videos easily teach math without proofs and other dross. I should had abandoned my method long before I gave up on linear algebra in February 1977!

I went along another linear algebra course, which actually shows what the matrices are doing with the vectors. That course in 1977 looks completely different in its abstraction. There were no visual examples in that course, and the technology is no excuse. A mere board provides enough examples without an internet nor even a computer. Haydn Maust of Mu Prime proved it, yet the course was a quarter century before he was born.