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We’d like to believe that humans are rational animals gifted with an ability to evaluate nearly every situation and give it a sound explanation. So why do so many people not seem to really have that common sense? Well, it’s been reported that “when people face an uncertain situation, they don’t carefully evaluate the information or look up relevant statistics. Instead, their decisions depend on a long list of mental shortcuts, which often lead them to make foolish decisions.”
This is how fake news works—if a fact appears to be true, many of us will take it as true. Think about it—if you've believed something to be true for a long time, it's unlikely you'd fact-check it out of the blue. It will probably take a very long while for you to realize something seemingly obvious—for example, that a penguin is a bird.
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Of course, IQ score is one of the most common universal measures to determine the rational capabilities in person. However, according to David Perkins from Harvard Graduate School of Education in Cambridge, IQ is very overrated. “"A high IQ is like height in a basketball player," says David, who studies thinking and reasoning skills. "It is very important, all other things being equal. But all other things aren't equal. There's a lot more to being a good basketball player than being tall, and there's a lot more to being a good thinker than having a high IQ."


