This question already has an answer here:
My question is simply why we are not able to edit our comment after 5 minutes from typing it.
Some times a typo mistake can change the whole idea or the point of view we are aiming to send. Thus it seems better to edit our comments. Other wise we have to delete the comment and post another one. Hence changing the chronological order of the comments on a post( answer or question), which may lead to a misunderstanding for visitors that will read them latter.
So, is there a way to edit our comment after 5 minutes from positing it ? Or is there a way to comment on the comment (to clarify or correct some mistakes) as in the social media (Twitter and Facebook ) ?