Asks if a given concept is realistic in a given context. Answers should say yes or no, with supporting info. Compare this with the science-based and hard-science tags. This tag should never be the only tag on a question, because this tag frames how a question should be answered, not the topic.
Unlike science-based and hard-science, reality-check questions do not necessarily require a scientific explanation. The approach for questions with this tag should be to ensure logical consistency. In short, does the concept make sense, given the rules specified?
Answers to the question should determine whether or not certain elements of the question are appropriate or realistic, or, contrarily, are likely to break a user's or reader's suspension of disbelief. People answering reality-check questions should keep in mind that some things may be realistic in-world due to various factors (e.g. giants or other creatures) not present in our world, even if these are impossible in our reality.
Rejecting the premise put forth in the question is only allowed if it is to point out logical inconsistencies and offering a solution is recommended.
If you want scientifically plausible answers consider also using science-based.
If you want only scientifically supported answers, including citations, also use hard-science.