Twenty-odd constants tuned to one part in ten to the power of 120. An absolute speed limit. A minimum scale below which the world stops answering. A maximum information quota per region of space. A universal digital code at the heart of every living thing. And a chain of global catastrophes that, in four and a half billion years, never quite ended life: not once.

Science calls all of this coincidence.

This book argues that they are parameters.

Drawing on Bostrom, Wheeler, Bekenstein, Susskind, Hoyle, Weinberg, Penrose and Rees, Cristian Cruzat Valdes builds a case in fifteen pieces of evidence and answers, one by one, the ten most serious objections ever raised. The conclusion is as uncomfortable as it is hard to evade: every argument exists for asserting that we are inside a simulation, and none exists that rules it out.

By the author of Too Many Coincidences.