I had great hopes at the start of this book that we'd get a meaty but approachable history of the development of mathematics. When describing the origins of number, arithmetic and mathematical processes the opening section is pitched well, but things go downhill when we get to detailed mathematical exposition. The problem may be that Luke Heaton is a plant scientist, which may have prepared him better for using maths than for explaining it. If we take, for instance, his explanation of the demonstration that the square root of two is irrational, I was lost after about two lines. As soon as Heaton gets into mathematical detail, his fluency and readability are lost. There's a central chunk of the book where the mathematical content seems too heavy for the way the contextual text is written. We then get back onto more effective ground when dealing with logic and Turing's work, before diving back into rather more impenetrable territory. One slight concern is that, in tal...