Let’s not bring up immigration...
No elephant here...down Simba! Down boy!
The demographics of the West have also changed over the past hundred years. Members of these demographics consistently score lower on IQ tests so that’s a contributing factor to the lower average IQ of the West.
People also don’t critically think as much now as they once did. They have the TV tell them what to think, and calculators and computers to give them instant answers.
“Let’s not bring up immigration...”
Exactly. That which must not be spoken in regard to IQ.