From the No. 1 bestselling author of What If? - the man who created xkcd and explained the laws of science with cartoons - comes a series of brilliantly simple diagrams ('blueprints' if you want to be complicated about it) that show how important things work: from the nuclear bomb to the biro.

From the creator of the wildly popular xkcd.com, and the Sunday Times bestseller What If?, even more hilarious and informative answers to important questions you probably never thought to ask.

'RIDICULOUS, DELIGHTFUL AND, DAMN IT, EDUCATIONAL' Sunday Times, Books of the Year. Welcome to the world's most entertaining and useless self-help guide, from the brilliant mind behind the wildly popular webcomic xkcd and the million-selling What If? and Thing Explainer