I'm intrigued but confused. Is this meant to be a practical advancement in learning? What does it achieve that's new? At first glance, it seems like if you k

I'm intrigued but confused. Is this meant to be a practical advancement in learning? What does it achieve that's new? At first glance, it seems like if you know little or nothing about the accuracy of an assertion, you can't assess its truth without acquiring more info about it from 'outside' your closed world. No formal method can change this. So is this method a better way to manage your lack of knowledge? Perhaps to better choose what question(s) to ask to resolve your uncertainty?