Who's Counting features selected columns from Paulos' well-known ABC News series of the same name collected here in book form for the first time, along with updates and brand-new original essays from the author, to examine how better understanding data improves our thinking and decision-making. With examples from government, mass media, natural disasters, the COVID-19 pandemic, conspiracy theories, climate change, "fake news," and popular culture, Paulos shows how mathematics and logic are, along with a humble respect for truth, our most basic and reliable guides to reality.