While we are at the topic of cognitive biases, how do you know that's the case? Quite many people believe that they are much more open than they are.

I don't know. I'm probably biased. But I feel pretty strongly that I'd like to know the truth. I'm sure I'm subject to the same deep, irrational Red v. Blue tribalism as most other humans, but I try to be as rational as I can.

The fact that you for example didn't follow up with the request to explain your own view in this thread is a sign that you don't put effort into engaging in the kind of actions that require you to actually express your ideas explicitly enough to find flaws.

Ah. I assumed your earlier comment in this thread was misplaced and you intended, "Lumifer: I, like Brillyant, am also interested in hearing your view." I am flattered you care about my view.

As I mentioned, I consider myself ignorant on the issue. That is, quite literally, I admit I don't know and have low confidence in my views..

I think I've eluded to those views in this thread...

Politically, I'm generally empathetic toward ideas like affirmative action in the U.S. on the basis of race because there has been serious discrimination in the U.S. on the basis of race in the past. It makes practical sense to posit it created a "headstart" for races who were not... enslaved... and otherwise discriminated against and it makes ethical sense to employ measures to even the score.

and

It seems obvious to me that [past slavery in America] does [have a large impact on African Americans in the present day U.S.], and that the effects are wide and deep, as slavery (and Jim Crow) is relatively recent history—We're only a handful of generations from a time where a race of people was enslaved and systemically kept from accumulating wealth and education.

What more would you like to know?