The TVTropes Trope Finder is where you can come to ask questions like "Do we have this one?" and "What's the trope about...?" Trying to rediscover a long lost show or other medium but need a little help? Head to Media Finder and try your luck there. Want to propose a new trope? You should be over at You Know, That Thing Where.
It's an Impostor-Exposing Test, except they don't seem to have any method to actually expose an imposter.
Perhaps I should have been more specific. I'm not looking for a trope about trying to prove someone is or isn't an impostor; I'm looking for a trope where someone presents what they consider to be convincing if not conclusive evidence of something, only for the person to whom they're presenting the evidence to respond with something like, "That doesn't prove anything." Or possibly a trope where someone provides an explanation that goes over someone else's head, but preferably the former.
Seems like a subversion of Impostor-Exposing Test or Something Only They Would Say. But I don't know if there is an specific trope for it.
What trope (if any) covers the following scene in Captain Marvel?
Danvers and Fury are sitting together trying to prove to each other they're not Skrulls. Danvers decides to demonstrate her photon blast as proof, at which point Fury points out that it proves nothing - for all he knows, every Skrull can do that.
I feel like there's an obvious trope for this situation, but I can't think of it, and a quick of the work's page didn't turn up any references to this scene. Ideas?