
Why are we hardwired for hope despite reality? Neuroscientist Tali Sharot reveals how optimism bias shapes our decisions, success, and mental health. Annie Duke calls it "adaptive" - this counterintuitive science explains why seeing life through rose-colored glasses might actually be our evolutionary superpower.
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What if I told you that right now, as you read this sentence, your brain is quietly deceiving you about your future? Not maliciously, but systematically-painting tomorrow in rosier hues than reality will likely deliver. About 80% of us walk around convinced that our personal futures will be brighter than statistics suggest, that we're less likely than our neighbors to get divorced, develop cancer, or fail at our goals. This isn't personality or temperament. It's neuroscience. Our brains are hardwired with an optimism bias so fundamental that it operates below conscious awareness, shaping every decision we make. Your brain didn't evolve to show you truth. It evolved to keep you alive. Consider the checker shadow illusion, where two identical gray squares appear dramatically different because your visual system "corrects" for shadows. Even knowing they're identical doesn't help-you still see different shades. This isn't a bug; it's a feature. For most of human history, quickly interpreting shadows mattered more than perfect accuracy. Cognitive illusions work the same way, but they're far harder to detect in ourselves. Take the superiority illusion: 93% of American drivers rate themselves above average. Mathematically impossible, yet we all nod along, certain we're the exception. When a pilot with thousands of flight hours crashes because his brain insists the plane is level when it's banking toward disaster, or when we confidently explain choices we never actually made, we're witnessing the same phenomenon: our neural systems create compelling illusions we mistake for reality. The question isn't whether we're biased-it's whether this beautiful lie serves us or sabotages us.
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Cree par des anciens de Columbia University a San Francisco
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Cree par des anciens de Columbia University a San Francisco

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