I'm trying to understand the scope of SuperUser and figure out what it is about my question about the history of computer display outputs that warranted closing.
It's my understanding that questions that are subjective, unanswerable, asking for lists, situational, or specific are eligible for closing. That said, I don't believe that my question fits into any of those categories.
I'm asking for a canonical, what are the facts, answer. What did computers use for output before monitors? The answer, apparently, is that there were several methods. That's still not subjective. It's a question of facts - what was. It's also directly related to computer hardware.
It was closed with a comment that claims that it's not constructive. I don't think so. The community, for the most part, seems to agree. As of writing, it has 18 up votes, two down votes against and three reopen votes.
Is it off topic, or not constructive, or perfectly valid?