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Here’s a finding that stopped me cold: a 2012 study out of Yale found that people with the highest science literacy weren’t the most aligned on contested facts. They were the most polarized. Their superior reasoning didn’t bring them closer to truth. It made them better at constructing arguments for whatever they already believed. So the smarter you are, the better you are at being wrong—convincingly. The assumption most people carry around is that intelligence protects you from bad thinking. That if you’re smart enough, you’ll see through your own biases, weigh the evidence fairly, and arrive at the right conclusion. It sounds reasonable. It’s also wrong. A landmark 2012 study published in Nature Climate Change by Yale researcher Dan Kahan and colleagues tested whether higher science literacy and technical reasoning skills would help people converge on the facts about contested issues like climate change. What they found was the opposite: people with the highest degrees of science literacy weren’t the most aligned on the evidence. They were the most polarized. Their superior reasoning abilities didn’t bring them closer to truth; they made them better at constructing arguments that supported whatever they already believed. The motivated numeracy experiment further illustrated this. Participants were given a dataset and asked to interpret the results. When framed as a study about skin cream effectiveness, people with higher numeracy skills performed well. But when the same data was reframed as evidence about gun control, highly numerate participants failed to outperform others when the correct answer contradicted their political beliefs. They used their superior math skills to find answers that aligned with their identity rather than truth. Psychologists call this motivated reasoning—the process where desires shape how we interpret information. Intelligence amplifies this: it gives people a larger vocabulary of justifications, making their rationalizations more sophisticated and harder to challenge. The implication is that intelligence becomes a tool for justification rather than inquiry. Kahan’s research extends beyond politics. In domains like business, relationships, and health, intelligence can be weaponized to support preexisting beliefs. The solution? Science curiosity—the genuine desire to learn something new, especially when it challenges existing views. Curiosity, not knowledge or reasoning ability, consistently resists motivated reasoning. The article concludes that the smartest move isn’t to trust intelligence but to be suspicious of it, especially when it aligns with what we want to hear.