Well now, wouldn't that depend on what we are talking about? You'd have to be talking about specific things that are irrefutable or concepts that are known.
There are any number of ways, and any number of people who can judge us quite well. What's more, many times their judgment...of...us, will be agreed upon...by...us, once we are exposed.
Education is a good thing. Some people fear it, others welcome it. I've often found it helps us grow.
But judgment and education are not the same thing.
My point is that judgment per se isn't helpful and can be limiting, if you're too quick to give credence to someone who's very good at sounding authoritative and knowledgeable and loudly asserting that he is right. It's a paradox with pitfalls on either side: being less knowledgeable, how do you judge whether the "authority" passing judgment is qualified? There are some common-sense guidelines and some blatant bs flags, but a skilled manipulator can negotiate that minefield with ease. "Trust but verify" is probably the only sane way, and don't ever drink any koolade, no matter how many people tell you that it's tasty and good for you.