While many would say that IQ doesn’t mean much, which is true to a certain extent, it gives a general outlook on the mental capabilities of an individual. The average IQ for the average adult in the United States is 100. This is the baseline. The sad news is, this would mean that up to 50% of the population could be below average IQ.
And in this lower percentile of low IQ individuals contains a percentage of even lower IQ individuals. Still functional but very stupid and prone to the lack of class and committing stupid acts. While the size of this group may seem like a small percentage, when you take that small percentage of over 300 million individuals, you still get a very large absolute number.