alt Hacker NewsWhy? Draw the line backwards, and in a couple of decades you are down at 0 IQ. That's clearly absurd, you can't draw any conclusions of IQ significantly before 1950 from how the line behaves after 1950.
Why? Draw the line backwards, and in a couple of decades you are down at 0 IQ. That's clearly absurd, you can't draw any conclusions of IQ significantly before 1950 from how the line behaves after 1950.
And that’s because IQ is a statistical distribution, not an absolute measurement of intelligence.
If everyone suddenly gets twice as smart as before, nobody’s IQ changes.