Re: I have a question.
If people haven't seen the topics before, they can read the thread to get the info they need. They can also post a thread of their own that's similar to avoid bringing back a dead thread.
Since this is a help site, we see a lot of questions. One of the reasons that this rule is in place is because that the topic dies after it's already answered. If a person brings it back, it just leaves it to unnecessary posts (such as other members saying the same thing as the last one, or people spamming) and that person who asked the question may not even be on the site any more!