>Also from what I gather on the whole the average IQ of the world is increasing, how is that explained?
Lots of factors impact IQ besides genetics. Education, nutrition, and environment are huge factors.
If you take two newborns and lock one in a dark cage, and raise the other with everything the world has to offer, you will see differences on IQ tests.
This isn't evidence that IQ doesn't exist. IQ is just one measure of applied thought and reasoning so you would expect it to track anything that affects those attributes.
Lots of factors impact IQ besides genetics. Education, nutrition, and environment are huge factors.
If you take two newborns and lock one in a dark cage, and raise the other with everything the world has to offer, you will see differences on IQ tests.
This isn't evidence that IQ doesn't exist. IQ is just one measure of applied thought and reasoning so you would expect it to track anything that affects those attributes.