[Rubinsalamander]

If you have a Bias about something you dont have to "spend" as much brainpower to reach a conclusion. Its what allows us to function in our life because thinking everything over again would be too taxing. We would get nothing done. So we rely on social cues(thats the way most people do it...) our own experience in the past( biased data..) to make decisions.

So biases are kind of the necessary. But in some instances the extra effort for unbiased decisions is worth it. Ignoring "Educationism" as a recruiter should be one of it. But to eradicate a bias is kind of Impossible. Its just possible to change or replace it with another one.