Paul:  We all have preferences...frequently, on trivial matters..... Such trivial preferences are of little consequence.  You might like Fords, I might like Chevys; you like Pepsi, I like Coke; you like cottage cheese, I wouldn't eat it on a bet....etc.  When we look at bias...as defined, not by me, but by widely used and accepted dictionaries, it involves meaningful irrational feelings...usually antipathies..  Many prejudiced individuals (racial, religious, ehtnic, gender, gender orientation) trivialize their bias with comments like "well, you're biased agains people who are prejudiced.....that's just as prejudiced."  If you look at the dfinitions of both bias and prejudice, their comment, of course, is silly.  Because I oppose racial discrimination doesn't mean I'm prejudiced against bigots.  IMO, opposing racial discrimination is NOT an "irrational antipathy."  Interesting topic....regards, Gary Crum