that some races were inferior and some more superior and that means the people on the left and john maynard keynes who was one of the founders of the cambridge eugenics society, many distinguished leading intellectuals of that era were absolutely dogmatic on the subject. then by the end of the century they swung to the other end of the spectrum, again as a group and anyone who'd dared to disagree with them was regarded as a racist. >> host: dr. thomas sowell on the where are intellectuals clustered in your view on this today? >> guest: they are still clustered. at the end it says that all differences between groups must be do or presumptively due to others. they are impervious to evidence. for example the housing situation, when they discovered that they were turned down by prime mortgage loans at a higher rate than whites that was due to racial information. if you look at the same statistics on blacks and whites and look at the statistics for asian-americans it undermines that completely. for example when blacks were turned down at a rate nearly double that of whites, at the very same time whites