Has anyone else spotted this contradiction? Assertion: This strategy for survival, known as autophagy ("eating oneself"), evolved in our ancestors over tw

Has anyone else spotted this contradiction? Assertion: This strategy for survival, known as autophagy ("eating oneself"), evolved in our ancestors over two billion years ago. Today, all animals rely on it to endure famines, as do plants, fungi and single-cell protozoa. Proof? (2 paragraphs down, after the more technical explanation of the need for autophagy.) When the scientists engineered mice so they could not use their lysosomes at birth, the newborn mice almost immediately died of starvation. If this evolved 2bn years ago, then how did our ancestors survive until it evolved? By this point, the mice have already lost many individual cells; the survival of smaller species/organisms would be infinitesimal once food ran out, or even in the time spent between meals.