This would have made self learning much easier for me. I remember when I was in high school I tried reading "The Road to Reality" by Roger Penrose and the gradi

This would have made self learning much easier for me. I remember when I was in high school I tried reading "The Road to Reality" by Roger Penrose and the gradient symbol seemed like some magical incantation only sorcerers could understand. If I had been told it was just a simple symbolic manipulation, I probably could have gotten through that section (now I would probably just Google it). I bet if Professor Penrose rewrote his book in code-language it would be much easier to learn, at least for software engineers!