Young people today, heh?!In what way does he have a point? I agree that gender and race may not be well defined as they involve many arbitrarily defined factors based on the state-of-the-art genetics and genomics and current scientific consensus, but age involves just one factor - your date of birth. In the case of gender and race, those factors vary between individuals (btw, mathematics always discriminates against minorities in such cases), but time is global. There certainly are many biases and ignorance in science and society, and at their interface, but as long as we all live on Earth, how would we be biased with respect to our inertial frame of reference?