I recently acquired the tome of Penrose's Road to Reality. I'm trying to figure who this book is intended for. It has a mix of deep mathematical physics concepts with light explanatory diagrams. I have a little bit of a mathematical background, bachelors in math, so I can follow it pretty fluently. But I can't imagine too many people picking up this book without some college background in physics and math. So far the book is very enjoyable for my uses. Anyone else have this book in there library? If so, what is your take on it and what do you think of the level of mathematics?