>By perpetuating the stereotype that "women are less interested in engineering" and suggesting that your chances of getting a good female candidate are lower, Damore is introducing an unconscious bias against women. After all, "it's likely that she doesn't really like this", "she probably went into engineering because her parents pushed her", "maybe she's great now, but she'll lose interest once anxiety kicks in."
A ("women in general are less interested") does not imply B ("woman job candidates are less interested"). A would only imply B if there were equal numbers of man and woman engineers. But there are fewer. It's entirely possible for "women are less interested in engineering than men" and "women that go into engineering are far more interested than men that go into engineering" to both be true.
So that hiring bias is based on non-logic in the first place. Considering the possibility of A does not legitimize B.
A ("women in general are less interested") does not imply B ("woman job candidates are less interested"). A would only imply B if there were equal numbers of man and woman engineers. But there are fewer. It's entirely possible for "women are less interested in engineering than men" and "women that go into engineering are far more interested than men that go into engineering" to both be true.
So that hiring bias is based on non-logic in the first place. Considering the possibility of A does not legitimize B.