Calculating God by Robert J. Sawyer is a thought-provoking science fiction novel in which a spiderlike alien paleontologist named Hollus arrives on Earth seeking to study fossil records of mass extinctions. Partnering with atheist paleontologist Thomas Jericho at Toronto’s Royal Ontario Museum, Hollus reveals that her own planet—and another alien world—experienced the same five extinction events as Earth. As they work together, the two explore deep questions about science, evolution, and the existence of a creator. Their journey ultimately leads to a mysterious cosmic revelation that challenges the boundaries between science and theology.