The takeaway of Robert Sapolsky’s Determined: A Science of Life Without Free Will is basically the same as that espoused by those Snickers commercials: You’re not you when you’re hungry. Except according to Sapolsky, there is no “you”—the hunger is what dictates your behavior, along with your stress level, whether or not you were born with fetal alcohol syndrome or grew up in a culture that valorizes individual freedoms versus one that prioritizes communal responsibility or in one that believes in an omniscient, omnipotent, vengeful deity.
Hormones, neurotransmitters, and how they are affected by your current and historical circumstances—these
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