"I do agree with some critics that it is now politically impossible to do serious scientific work on differences in intelligence between the races; which is sad because there may be indeed differences which can be detected by research and which may be useful to know. However, I am convinced that cultural biases in the tests make such tests very iffy. I also suspect that if such tests can be devised to be bias-free, we may be very shocked as to what they eventually reveal. As it is now, preliminary results will either be swept under the rug if they are "incorrect", or greatly exaggerated if they meet someone's racist requirements."