By "biased" in the sentence you mention, I meant "biased" in the more mathematical sense (i.e. this mountain road has a bias towards left-hand turns). I don't think there has been any preferential treatment given to males entering engineering-type programs, rather historically more males have enrolled in these types of programs than females (much to my chagrin for decidedly less noble reasons) as a college student).

I agree with your final point, as long as we truly look for background and individual experience as valued elements of diversity. Quotas, etc. are not the answer, and while seeking true diversity is hard work, I think it's worthwhile in the long run.

Thanks for your comment.