Steven Pinker on What Thomas Jefferson DIDN'T Mean When He Said that "All Men Are Created Equal"

That we're all clones with identical abilities, aptitudes, etc., and that an equality of outcome between various groups could ever be secured (as Thomas Sowell has pointed out on numerous occasions, there has NEVER been a society in which the composite ethnic groups have achieved at the same rate and so, yes, an affirmative action program whose goal it is to achieve this is result is doomed to fail).