How do comments work?
Is there any way to view edits made to comments to a reply ? For example if someone modify one of their comments, can the original be seen ?
From How do comments work?:
You can see that a comment has been edited (a pencil icon is added), and you can see how many times a comment has been edited (mouse over the pencil, a tooltip will show the edit count if edited more than once).
However, due to their disposable nature, no editing history is visible1
1 There is one exception to this: if a moderator edits a comment, the fact that they did is visible to other moderators in the editing moderator user history. This information is never available to regular users.