1. Racial groups share more in common than iq groups

2. Racial cohesion actually exists, iq cohesion doesnt. Hence why there are no iq nationalist nations

3. Jobs high iq people don't do

4. High iq groups which rock the boat, makes sense to limit them against a cohesive bulwark

5. If automation is what you rely on then it will happen anyway. Already good iq stratification in society

6. Birth rates