So you can't delete an answer or question if you change your mind?

As long as it’s within the alotted editing time you can. I’ve sometimes done that if an identical (or even more correct answer) was posted during the time I was typing mine.

You can’t erase the fact that you made a post but I’ve just erased all the content and left a period or an ellipse.

After the editing window has passed, your out of luck unless you can appeal to the mercy of a mod. If your reason is good enough they can send it back to you for editing and you can change it.

You can flag it and ask us to remove it. If it’s an answer, we generally will. If it’s a question that has already gotten several answers, we generally won’t. We need a pretty compelling reason to remove not only your question, but the work of everyone who answered it, too.

If you change your mind, just post below that you have changed your mind and explain your new position. I believe a ton of people here would really respect that. It’s really refreshing, and in my opinion, a powerful thing to do.

No.

That is why I went from a regular user here to answering something once a month or less.