- The justification is based on debatable grounds that will look like guesswork, rationalization or misaimed fandom to others.
- The justification asserts that the use of the trope resulted in a better story, or invokes Your Mileage May Vary and/or MST3K Mantra. None of these issues are relevant.
- The justification is that some kind of rationalization is provided in-story. This is based on a misunderstanding of justified trope by the TV Tropes definition: It's not a "good trope", it's a trope that flows naturally and inevitably from the original premise of the story. A story fact that is invented and introduced to explain an otherwise-implausible trope is a handwave, not a justified trope (many handwaves are used to excellent effect; many justified tropes wind up as Wallbangers - "good" has nothing to do with it).
- Trying to justify some tropes (like Action Girl, Determinator, Yandere, or Barbie Doll Anatomy) is completely silly. Not only is the trope not inherently negative, the trope is inherently not justifiable. It just exists, usually as an expected staple of a genre.
- The justification is not so compelling that it warrants breaking up the flow and structure of the article for an extensive info-dump of boring details, or worse, a debate between editors. Don't bore the reader. If it's truly a justified trope by the TV Tropes definition, make your explanation brief and not argumentative. If it would take paragraphs to explain or would contradict the previous editor as a matter of subjective opinion, don't add the explanation.
A justifying correction may sound similar, but is a completely different matter. It's an addition made to contradict a verifiably-incorrect claim of objective fact (not subjective opinion):
- Show A: Character B said "C".
- Character B actually said "D", as you can see on page XYZ. So Show A isn't an example of this trope.
Justifying edits are to be avoided since they are one of the signs of Conversation in the Main Page. To a fan of the show they look nitpicky; to someone who's not a fan, they're annoying and look like fan dumb, possibly turning them off from trying the show. Don't make the writing weaker in order to try and cast your show in a better light. The way a work plays with any given trope says little or nothing about its overall quality, in either direction. If an example is factually incorrect, remove it entirely and explain in the "edit reason" field or the discussion page. Finally, remember that acknowledging that it's a justifying edit doesn't mean that it's okay to make it. If you see a justifying edit, the first thing you should do is figure out why it was made, which will result in one of two courses of action:
- If it's being argumentative or explaining how the above entry is not an example then just delete it. Examples are only useful when most people who watch the show in question can at least agree that it uses the trope. If it has a point, you can probably delete the entry that it's responding to as well.
- If the edit in question is simply adding more contextual information that was omitted from the original entry but still establishes the example as having a clear relation to the trope, just try to integrate the information into the original entry in such a way that it appears the example was written by a single person. Remember that editing examples is encouraged. Adding sub-entries that make the page look like a forum post is not.