I would like to invite the authors to prove their solutions always. If you have written the following in your editorial, please write a strong proof:

"It is always possible" or "We can show that" — 1965C - Folding Strip

"The sufficiency of this condition is obvious, and the necessity is left as an exercise to the reader" — 1954B - Make It Ugly

"The optimal strategy will be" — I will not show an example, but it occurs without proof in many tasks.

and many more...

As a master, I can't understand simple things either. I also often saw grandmasters who did not understand and wrote in the comments to be explained to them. I have friends in real life who don't solve codeforces for this reason.

P.S: This blog is like a recommendation because this problem is very common. I understand that most authors do not do the contest for money, but this problem of editorial articles can also be eliminated :)