“As we learn more about genetic difference we may well find that cognitive abilities vary according to where in the world our ancestors lived. If we simply deny this might be possible, we won’t be ready to respond as we should, by saying, as the Universal Declaration of Human Rights puts it, that human beings are “equal in dignity and rights”, not that they all have the exact same capacities. Once again, too much of the outcry over Watson has fallen prey to the myth that equality requires sameness, between individuals or populations.”