ig·no·rance thresh·old
/ˈiɡnərəns/ /ˈTHreSHˌ(h)ōld/
noun
The point to which a statement or attitude becomes too ridiculous to be worthy of a response, other than for the purpose of calling in question the credibility of the source of such non-sense.
Most none-sense is best to be ignored. We don't argue with toddlers and flat-earthers for good reason: it only empowers them. If you've arrived at this link, it's possible you've been presented with some non-sense statement barely worth more than a link to this page.
Shaming the Troll
Occasionally however, pointing out extreme ignorance serves the purpose of highlighting the questionable credibility of the source of the comment.
