Our brains are much more advanced than other mammals, we have the ability to use languages, make tools, and live in sophisticated societies. According to the theory of evolution, human beings’ advanced brains are the results of natural selections. But which came up first, a more advanced brain or the survival skills that other mammals don’t have? Since higher abilities require a more advanced brain, scientists believe that it is more probable that humans developed their brains first, with a nutritious diet that makes use of various resources in and near the ocean, such as fishes, eggs, and plants. These resources are easy to get, don’t need the hunting process, and they can supply the nutrients for brain development. But here comes the question: How does this relate to the baby fat?