"Grant's book ranges widely, from ancient and modern geocentrists and flat-earthers to inventors of perpetual motion machines, promoters of zero point energy, discoverers of Atlantis ... and hunters of Bigfoot ... taking in a lot more along the way. There's something very satisfying in seeing that every design for a perpetual motion machine (weights! magnets! no, wait, water ...) that I ever scribbled on the back of a physics jotter in high school was anticipated centuries earlier by people much cleverer than myself.... Beautifully produced, endlessly entertaining and highly recommended."—Ken MacLeod