Scant justification written here certainly. Your example of the child is not a good one in this context because the child can only do it based on knowledge or b

Scant justification written here certainly. Your example of the child is not a good one in this context because the child can only do it based on knowledge or based on 'they look different.' Well turns out black people and white people 'look different' but these days we now know that we are all members of the same species. The examples I am more worried about are not knowledge based (or judgement based). The ones I am worried about are the stories we tell about the _actions_ we take, why we choose A instead of B. Answering these requires us to introspect our own behavior and that is exceptionally difficult. Take for example a question like "how did you know it was safe to cross the street?" Many people will tell you that they 'looked both ways and saw nothing was coming' but if you have them wear earplugs they will get run over because it was really the fact that they were listening for the cars. Or say you meet someone and you decide you don't like them, you can't really go back an undo that, but it might actually have been the case that you didn't like the perfume they were wearing because it was the same one that your ex used to wear, and it had nothing to do with the person themselves. Virtually no one can catch all the cases like this because we are trapped by our own brains and our own blind spots. Buying your brain's bullshit without attempting some independent verification (eg by asking someone for another perspective or doing little experiments on yourself) is a exceptionally common, and difficult problem to overcome.