This is regarding <A HREF="http://superuser.com/questions/170603/what-are-the-differences-between-slave-and-master-hard-drives">Question about master and slave drives</A>.

By the time Gareth completed his edit, the question was rather straightforward.  Being familiar with the technology, I found the question rather clear.  (It could have been made more clear by mentioning PATA, but there was a PATA tag, so it was fine.  Yet @random closed it, as "not a real question".

That was a decision that I'm not understanding.  (Such a decision would have made a lot more sense with the question's original form, but not by the time random closed it.)

Is there some criteria that is expected to be followed to determine when that reason is to be applicable?  (If not, how would such a decision be sensibly reversible?)