Harari’s retelling is appealing, we suggest, not because it’s based on any evidence, but because we’ve heard it a thousand times before, just with a different cast of characters. In fact, many of us have been hearing it from infancy. Once again, we’re back in the Garden of Eden. Except now, it’s not a wily serpent who tricks humanity into sampling the forbidden fruit of knowledge. It’s the fruit itself (i.e. the cereal grains).