I'll be the first one to plead guilty here about one idea. It's not the obvious saying about sometimes a little knowledge is dangerous, as people are apt to use for or against something without fully researching the subject enough to have a knowledge based opinion, but something similar we all do and I really get tired of hearing when practiced. And that is?
Don't put your opinion ahead of your knowledge or experience. It only shows your ignorance, both of the facts and reality.
I realize we can't know enough anymore about anything with certainty we have the knowledge or experience to express a view, but we certaintly shouldn't open our mouth espousing an opinion when we haven't even researched the matter, but our old knowledge and experience repackaged as new insight.