BS 135 Lisa Barrett on How Emotions Are Made
Brain Science with Ginger Campbell, MD: Neuroscience for Everyone
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The Importance of Variability in a Biological Category
Darwin's most important insight is that a biological category like a species is actually a highly variable category. Without this variability, the environment can't select which individuals are going to live and which individuals will not survive. So variation is really important to the survival of the species because you want a group of animals that's robust to changes in the environment.
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