Book excerpt: Does God exist? Does He do anything in this world? Famous authors like Richard Dawkins suggest strongly that it is very unlikely, but how unlikely is it? God Doesn't; We Do brings James A. Lindsay's mathematical expertise to the question and is able to put the matter under a microscope only available through an understanding of abstract mathematics, which he makes accessible to any reader. Because of that, this book will change the conversation about the existence of God. The central theme of this book, though, points out that even if there were a God, we have no reason to believe He does anything at all in this world. Thus the responsibility is on us, as it always has been, to make our world what it will be. From the back cover: Our world is one that is full of difficult challenges, and many people still turn to God for solutions or credit Him with ones that they find. The time for that kind of superstition is long passed. God Doesn't; We Do seeks to address the topic on philosophical grounds, making appeals to a scientific mindset and evidence-based decision making in fields where religion has dominated for centuries, including morality, politics, and even spirituality. The title really says it all-God Doesn't; We Do: Only Humans Can Solve Human Challenges.