What if, for some reason everyone on Earth's intelligence was half what it is now? How would this affect people’s day to day life? Like how would it change education, the economy, and politics etc.
closed as too broad by sphennings, PipperChip, Gary Walker, kingledion, Vylix Dec 11 '17 at 3:05
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IQ was once measured as intellectual age compared to actual age. Although the measurement is deprecated, it's a very helpful way to visualize questions about intelligence. Using that measurement and your proposed cut in half, your new typical high school graduate would be as developed as a first grader for old humanity. Your forty year old peak earner, at the top of his professional mastery in new humanity would be as developed as an undergrad in old humanity.
There are recent studies that some animals, dogs in particular, are as smart as old human children. I'm not sure what it might be like if we weren't the most intelligent creatures on the planet.