Beware indeed of giving others more bouncy walls on which evidence can re-bounce and double-, triple-, quatruple-, nay, Npple-count! I once naively thought to improve others' critical thinking by boosting their ability to appraise the quality of my own reasoning.

Lo' and behold, for each example I gave of a bad reasoning I had made or was making, each of them was inevitably using this as further evidence that I was right, because not only had I been right much more than not (counting hits and arguments are soldiers and all that), but the very fact that I was aware of any mistakes I was making proved that I could not make mistakes, for I would otherwise notice mistakes and thus correct myself.

TL;DR: This remains a profoundly important unsolved problem in large-scale distribution, teaching and implementation of cognitive enhancement and bias-overcoming techniques. It's even stated in Luke's "So you want to save the world" list of open problems as "raising the sanity waterline", a major strategic concern for ensuring maximal confidence of results in this incredibly absurd thing they're working on.