In this week's Book Club podcast my guest is the theoretical physicist Michio Kaku. In his new book Quantum Supremacy, Prof Kaku explains how – as he sees it – the advent of quantum computers is going to turn the world as we know it on its head. He explains the extraordinary possibilities and perils of the quantum revolution, tells me how Albert Einstein and Flash Gordon set him on his path, and argues why when it comes to trying to make sense of the universe, you need to be prepared to be crazy.