Imagine a patch of ice on a busy sidewalk. You can put up a sign that says "be careful, icy path" but lots of people are still going to slip and fall. The advice (ie the sign) can only do so much as long as the hazard exists. The challenge here is the hazards are your mental models so they are a lot harder to clear than an icy patch.
Yep, and almost everyone thinks their mental models accurately reflect reality. If they didn't, surely they would change their model, right? ;) Sometimes, even, folk's mental models become so important they try to force reality to conform to them, often with disastrous results.
