You're looking at this from the point of view that bias is inherently bad. It's not. Biases do not need to be "lesser in degree" to allow adding something new to a conversation. They only need to be different from existing ones.

You know, diversity improves results.

Hmm, I spent some time thinking about this comment, and I still don't get your point. Does my bias invalidate my claim? I mean I don't have any hard evidence that this is happening, but from a historical point is makes sense to me. If you disagree, it would be helpful to point out why, rather than to call out my bias.