In recent events Bill D. has left the site. During a now-closed thread pointing that out a comment was linking to the previous thread started by the user Math Gems when Bill was suspended for a month.
That thread was a long and interesting (or tedious) discussion, and several moderators expressed that they feel that this thread should not be deleted, as it contains a lot of information which may be relevant later on. The thread and all the answers were locked by Mariano in order to prevent further changes.
Back to the recent thread and the comment, it turned out that the thread has been deleted. How could that be? Well, apparently Bill unlocked the thread and all the answers -- something which allowed four users to vote for its deletion.
I don't want to discuss whether or not Bill unlocking the thread was justified, that has happened and Bill left the site. There is little to be gained from this discussion.
I do wish to propose that the thread will be undeleted and locked once again. I agree that keeping this thread visible is a good thing, and I would not want to think other users cannot access this part of the history of the site.
The reason I opened this thread is that I don't wish to get into a deletion/undeletion war; nor I want people to change the thread while undeleted (either by edits, or worse: adding/removing comments). Instead an initial discussion would be helpful. Please don't vote to undelete the thread before some discussion has taken place!
I propose that if the thread is to be reinstated then a moderator should undelete it, and immediately lock it as well.
Hopefully some [reasonable and civilized] discussion will occur in the comments/answers, and a week from now I will post two poll answers (unless a very clear opinion is formed before that).
currently deleted:Can we do anything to avoid losing Bill D?
Update: The thread was undeleted by three members; and locked by Grace Note to allow the discussion to take place (because the request is that the data preserved locking is essential). Grace has said that the lock will be removed (if needed to) when some consensus has been reached.