240 aquatic ape theory
P1: H:newborn babies can swim and float. 提出:1.Ancestors walking upright is to keep head above water and freed up hands to use tools. 2. hairless ape is a characteristic of aquatic mammals. 3. layer of fat beneath skin which is different form other primates 4.profusion(丰富,充沛)of sweat glands(汗腺)
P2: “aquatic ape” theory never provoked
P3: south Wales DM 36years later started support aquatic-ape theory. M: we are fattest primates by far and our babies are only ones born fat.