There [is a question](https://physics.stackexchange.com/questions/443260/could-sam-have-pierced-shelobs-carapace/) I believe to be well on topic, relevant, and interesting. It is asking to consider a fictional scenario and evaluate, as given in the fictional scenario, whether it is possible to achieve with classical physics.

It is, I believe, people who are misapplying the prohibition against fictional physics, who have voted to put the question on hold. The prohibition is:

> 
> **Questions about fictional physics** "Could a warp drive get you out of a
>  black hole?" Questions about physics of fictional worlds which are not
>  sufficiently grounded in real physics are off topic here, but they may
>  be on topic at Science Fiction & Fantasy.
> 
> 
> 

This seems to me to suggest the prohibition is against trying to determine whether fictional physics rules would allow something to happen.

Is asking for a scenario to be evaluated against real-world physics then off topic? Is it off topic to ask if a fictional scenario is possible as it is described, *if* the physical rules being asked to judge it against are real-world rules?

Example, would asking if Verne's moon cannon is possible be off topic?

Is there recourse if off-topic rules are misapplied?