The story you often hear goes like this: You and me and everyone around us are multiplying ourselves into extinction. But some economists have been pushing back against this notion — including in these pages — suggesting the inverse of the popular narrative. Over its research period, the Simon-Abundance Index shows that resources became more abundant as the population grew. This haul of a new book by Marian L. Tupy and Gale L. Pooley runs with that research and further documents how “resource abundance” actually increased faster than the population. A dynamic they call superabundance. But its conditions, you see, aren’t automatic, which is what Superabundance’s 400-plus pages are about.