A few examples (in approximately increasing order of controversy):
If you proceed anyway...
- Identify knowledge that may be dangerous. Forewarned is forearmed.
- Try to cut dangerous knowledge out of your decision network. Don’t let it influence other beliefs or your actions without your conscious awareness. You can’t succeed completely at this, but it might help.
- Deliberately lower dangerous priors, by acknowledging the possibility that your brain is contaminating your reasoning and then overcompensating, because you know that you’re still too overconfident.
- Spend a disproportionate amount of time seeking contradictory evidence. If believing something could have a great cost to your values, make a commensurately great effort to be right.
- Just don’t do it. It’s not worth it. And if I found out, I’d have to figure out where you live, track you down, and kill you.
Just because I'll be able to do something doesn't mean that I will. I can resolve to spend time evaluating people based on their own merits all I like, but that's no guarantee at all that the resolution will last.
You seem to think that anti-bigots evaluate people on their merits more than bigots do. Why?
If you're looking for a group of people who are more likely to evaluate people on their merits, you might try looking for a group of people who are committed to believing true things.