Disciplined badge will be awarded to users who Deleted own post with score of 3 or higher.
Here I don't understand the purpose of this badge. If anyone has a post with score of 3 or higher, means it is somewhat useful and clear. So there is no need to delete their post. So what is the purpose of this badge?
The idea is that they delete their own answer because it is wrong, was written because a misunderstanding of the question, or it is not an appropriate answer, and they notice that; the fact they do it even if the answer score is 3 makes them disciplined.
Strictly speaking, an answer's score doesn't say anything about the its quality. In fact, the user who answered the question, and the users who voted the answer, could have misunderstood the question. If that were the case, the answer would be not helpful, even if it got three up-votes.
