I love it when I come across math, science or computer writing that is really mind blowing. This can be something I already know but is presented in a different way that offers a deeper understanding. A couple of weeks ago I picked up on a lark at a bookstore at London Heathrow a gem like that: “Why does E = mc^2?” by Brian Cox and Jeff Forshaw. It provides a really lucid introduction to Einstein’s theory of relativity. If you have any interest at all in this and feel you don’t understand it ...