"Random" correlations? If such correlations are statistically significant and replicable, they are unlikely to be random.
Theres a statistically significant correlation between the divorce rates in Utah and suicides using explosive materials. This isn't because they actually have something to do with one another it's because there's enough data to find statistically significant correlations between anything and something stupid.
But they almost certainly do, as both homosexuality and chocolate consumption are related to brain chemistry.
The fact that I have to point out that coorelation isn't causation is tedious enough without you whining about how maybe chocolate either causes or is a sign of high IQ. Despite my enjoyment of chocolate it seems that I'm not smart enough to understand how typing the words brain chemistry just explains everything.
But they are the best measure we have of a quality that is biologically rooted and scientifically interesting.
It's highly disputable whether or not IQ tests measure some generalizable factor of the brain or just a couple of random abilities that people assume all come from a single g factor.
No one has said IQ tests enable understanding of biology, any more than a tape measure enables understanding of what makes people tall or short. They are a measuring tool. They measure something that is rooted in biology, but the explanation has to come from elsewhere.
A tape measure is a far different tool than an IQ test, that's a false equivalence. A tape measure tests an extremely simple and straighforward factor, physical height. IQ tests use a battery of tests across a couple different skill sets and a psychologists assessment of how those skills are related to an unknown g factor that they don't even know if it exists as a single generalizable factor and then norms that against the average score people get.
It would only be equivalent if you were using a tape measure to measure the size someones front door and trying to figure out their height.
My dream is a hemispheric common market, with open trade and open borders.