TL;DR: the option to edit a message after it is sent is awesome but also incomplete. An additional option to view the edit history would complement it. We are all prone to typos and other grammatical errors so being able to edit already sent messages can be very handy. But the ability to edit messages after the fact makes it also possible to change the actual meaning of the message instead of just refining it. This is problematic because it can be abused by doctoring a conversation. For example, one could change the meaning of a message that had already been replied to and make it seem like the replies were directed to the current meaning of the message instead of the original one and distort the whole conversation. Yes, the "edited" label is there and we can see the time when the most recent edit was made, but that's it. The editor can claim that they didn't change the meaning of the message but only corrected some typo. And, currently, there is no way to verify their claim. A more sick person could even use…