I don’t often envy other people, but this what if? book I have started reading makes me want to be able to think like Randall Munroe, who quit working at NASA to draw cartoons. Let me say more positively then, that he is an inspiration. This is a wonderful book of weird questions, which he explores with splendid reason and imagination. This book captures the spirit of thought experimenting in a delightful and hilarious way. This could very well inspire some future scientist to figure out some great new idea. Sometimes it is kind of gross. I should admit that.