Ironically, my grandfather at the time made his career by selling correspondence courses for college degrees. It was the equivalent in those days. He met my grandmother selling her a course in mechanical engineering she used to get a better job at the phone company.

My grandfather started literally at the bottom - shoveling coal into a steamship's boiler. A dirty, dangerous, sweaty job he did for years. He improved his lot by taking correspondence courses, and liked them so much decided on a career in selling them, primarily to sailors.

> If everyone

I wouldn't conflate "don't" with "can't".

I know about the MIT course because I took it myself (along with others) to fill in gaps in my education. And why not? Education doesn't stop with the diploma.