I do not know how I am supposed to do this.
According to the help system,How does deleting work? What can cause a post to be deleted, and what does that actually mean? What are the criteria for deletion? , I am supposed to ask here to have my answer undeleted by vote.
It is an answer to question Does trade affect Earth's rotation? At the time I wrote the answer the page contained several humorous comment. Some have been deleted since.
This induced me to write my answer in kind, though it was actually a serious answer as it was suggesting the most efficient way (not yet given by others) to actually do what the question asked. It is possible that my humor was too cryptic, as it was not understood, as the answer was deleted as irrelevant. Not knowing the system I did not try to edit it (as the help mentions that only for self-deletion), and I tried to explain in comments the problem and the meaning of the answer to have it undeleted. Without any success, when a final remark made me understand, after several hours, that I was supposed to edit it.
So I did, and I do believe it is a sensible and useful answer: https://physics.stackexchange.com/posts/69746/revisions. It was edited 15 hours ago, but nothing is happening. I understand that some users can vote on this. Can you help. Thank you.
Suggestion: it should be said more clearly on the help page that a question is supposed to be edited before it can be undeleted.