In guidance How to ask a good question. it states:
Make your title your question
Use your title to convey as much information about your question as possible. Since the tags already convey the general subject area of your question, the title should communicate the question itself as faithfully as possible. If necessary, leave out hypotheses in the title, and in the body of the question, explain why the question requires those hypotheses.
Don't be afraid to make the title long
Titles are allowed to be anywhere from 15 to 150 characters long. 140 characters (the length of a tweet) of plain text take up about two full lines on the home page, so try to keep it less than that. But 140 characters is a lot longer than you might think. Too many people restrict themselves to 20 character titles. They're trying not to waste your time by making you read a long title, but they end up wasting more of your time because you have to actually open the question to see if it's interesting to you.
I was wondering why these two edits are rejected:
My idea is to put enough information in the title as much as possible like the guidance says, espcially about notions since not all notions are so widely used and may cause minunderstanding, but my two edits were rejected because "This edit does not make the post even a little bit easier to read, easier to find, more accurate or more accessible. Changes are either completely superfluous or actively harm readability."
Could anyone please what a good title should be? Thanks in advance :)
After comparaing these two almost same edits, I begin to realize it's much person-based.