That's true, there are several old questions that have some pretty awesome content and that close reason is just a bad description. It looks like one of the ot

That's true, there are several old questions that have some pretty awesome content and that close reason is just a bad description. It looks like one of the other moderators agreed with you too, since the status of the data structures question is now changed to locked: > This question exists because it has historical significance, but it is not considered a good, on-topic question for this site, so please do not use it as evidence that you can ask similar questions here.