There are cognitive metastrategies that can look like irrationality in the small, but are pretty sensible for people with limited information and research time.
Consider: "a stranger makes a sophisticated argument, which seems convincing, whose conclusion is that you're wrong about something important". If you always respond to this by doing whatever the stranger advocates, you're likely to end up getting scammed or getting eaten up by a political movement or otherwise doing something you later regret.
Even if the argument is true as far as it goes, sometimes true facts are presented in a misleading context. One favorite tactic to discredit a group seems to be to find some of its worst members and do truthful reporting on them; one can also try to suggest "policy X is working/not working" by choosing the statistical measures that paint it in the best/worst light, and failing to mention the other measures that might portray it more accurately.
A general strategy of "remember new information, but don't let it affect your actions until you've had time to reflect / consult with those wiser than yourself / do further research" is useful in a wide range of situations. (And if you don't bother to do further research for years, it follows that either the new information sits in abeyance for years, or you take the risk of acting on it without having validated it.)
