This is
bullshit. Here's why:
Intelligence
exists. Some people are
smarter than others. Some people are just plain
dumb. This is easy to see.
It is hard to measure intelligence. Example: studies show that African Americans do about 15 percent (!!!) worse on IQ tests when they are told that they are taking intelligence tests. Yep - subjective feelings about intelligence (and its value) can have
drastic effects on IQ test performance.
Insert other relevant studies that I forgot about because I was a
slacker in psych class.
The Bell Curve is thought provoking. It is also highly questionable. Don't take it as
gospel.