Replying to Editing posts

Since I didn't find any threads about this and I am pretty sure that you are making me to look like a fool for not finding these threads. But wouldn't it be a good idea to let people edit posts or remove them If they would go into wrong thread or sumthing. And that only includes you'r own posts. And when you delete you'r own post there would read like ''comment removed'' So there wouldn't be any miss understandings about some replys what doesn't have quoted the post.