In general I would like to know if there is some criteria to consider certain thought experiments or questions to be better suited for philosophical discussion rather than physics discussion.
The question Is a Thomson's lamp physically realistic? has been put on hold for being off topic. I am not clear why that is the case?
I understand that the question is philosophically motivated but I think it is suitable for physical considerations.
One can answer the question in a non philosophical manner. The question ask for some physical argumentation in favour or against a possible outcome in a thought experiment. Even, the possibility of the thought experiment can be argued on physical grounds.
The answer to this question would require to at least elaborate in the following topics:
Experimental designs and results
Accepted and/or actively researched theories
However, there are some other questions (e.g. Did spacetime start with the Big bang? ) which I will regard as highly philosophical but again I understand them being open as all the answers are in some sense physics oriented.
I am asking to consider the reopening of the former question, but as a second plea. My main request is if someone would mind to point me some general guideline about when is a question too philosophical and not suitable for the site. Even if the guidelines are time dependent.