I really like your question. It gives me a chance to repeat that the Dialog network has created spaces where it's possible to come together, and it continues to do so. We don't aim to change science completely, just as we don't aim to change knowledge systems completely, but we can create meeting spaces where we can find common denominators.
Getting back to your question about how to distinguish knowledge from an opinion or belief, you have to see all the work that's being done in the social sciences. We're trained to determine whether we're talking about actual knowledge that has been validated by people, that is to say, knowledge as opposed to opinion.
That's characteristic of the social sciences. Consequently, all I can do is state what I think in my own field.