I love how many people add variations of "And be Correct" or "If you make a mistake correct yourself" as if that does anything. It is as likely to make a mistake the first time as it is the second time. People imagine that it will work like when they do it externally, but that not how it works at all.

When you tell it to try again after it makes a mistake you add knowledge to the current system and raise the chance of success, like asking him to try again after getting it right will raise the chance for a failed response.