I think that was actually his point. > Everyone has a bias. That much is taken for granted, right? Do I smell a challenge? :) Nobody has perfect knowledge, a

I think that was actually his point. > Everyone has a bias. That much is taken for granted, right? Do I smell a challenge? :) Nobody has perfect knowledge, and many people are motivated in bad ways. But "everyone has a bias" is, I think, a subtle attack on the idea that anyone can actually know anything. Most philosophy of science courses would endorse some version of that view, but I don't. I know that 2+2 is 4, and that's not biased. I know a lot of other things, too, that aren't biased. There are people who will claim that, say, 2+2=4 is just a way for Western imperialists to get their way over others, or even that math is a figment of the imagination without correspondence to the real world (many math professors would defend this), and those people are wrong. Hell, some people would claim that assuming there is a "real world" is biased, but they are wrong, too. I'm not going to prove it here in the comments, though.