Of course I think we should teach our children critical thinking. "Truth" is elusive! The scientific method doesn't proport to discern "truth" really, it sets hypotheses and methods to test those hypotheses. The results are expressed in probabilistic terms, not absolutes.

To me that's as close as the pursuit of truth gets. Different hypotheses are (by convention) tested to different criteria. For instance, expert testimony in courts is typically expressed as "to a reasonable certainty" which means "more likely than not" (51%). The published scientific research with which I am familiar is typically expressed to a probability level of 95-99%. That means that 95 out of 100 times those results were not "attributed to chance." I have also (haven't we all) experienced certain groups (often religious) which represent certain positions as absolute and infallible truths.

So, I think "truth" is an ever-moving target.