The human race is losing weight. Unfortunately, it’s in the wrong place. 20,000 years ago, the average human brain was 1,500 cubic centimeters. Now it’s more like 1,350—it’s lost the volume of a tennis ball’s worth of neural matter. What’s the cause of the shrinkage? Scientists are divided, but some think civilization itself permits weaker-minded individuals to propagate, pulling down the Bell curve. Other scientists aren’t convinced the loss of volume equates to loss of intelligence. Our ability to communicate and record past knowledge means that what we lack as individuals, we make up for as a society. Still, it’s a weird phenomenon…so are we evolving into pin heads?
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