What is a historical lock, and what is it used for?
I answered the following question about WPF books back in August 2008. I thought I'd be a good citizen and go and update my answer with some more books I've read since that time. However, the question has been locked and closed.
Now I realise this isn't the best question or answer. It's subjective; the answer was my opinion. That said, it seems to be a very useful answer for anyone that might be looking for information on WPF. In fact, if I search for "WPF book" on google, it's the first result. Yet I can't seem to update the answer. It seems to go against the very goals of the site - of having an updated, relevant, useful programming Q & A site.
Without getting too much into politics (I rarely visit Meta), I was wondering why such questions are marked as locked and closed, and what can be done to make these active again. From looking at this question How do you reopen a closed question?, it seems there is normally a link to vote to reopen - is the link missing because the question was closed by a moderator? If so, what can be done from here?