<p>If I flag a question because I think it's more about programming than about statistics, does it make sense to leave a comment explaining why I think so? I usually don't do that (I don't flag and then comment), because I don't want to induce the OP to close his/her question and ask a new one on SO. Instead, flagging and then letting moderators decide if to move the question to SO is better, because then there's a record of the question having already been asked to CV. This prevents objectively annoying situations where the OP moves the question to SO, only to be (kindly or not) suggested to move it to CV. However, if the OP is completely new to StackExchange, I thought that leaving an explanatory comment, together with flagging the post, may make him/her feel more welcome and less disoriented, in case the post does get moved to SO. What do you think? The specific case is</p>

<p><a href="https://stats.stackexchange.com/questions/276198/i-want-to-compare-two-datasets-to-determine-which-variables-they-share">I want to compare two datasets to determine which variables they share</a></p>
