I remember a story about a kid who went up to another kid on a playground, put a gun to the back of his head, and shot him dead. He thought he was a kid who has “dissed” him, but it turned out it was a different kid altogether. He was genuinely surprised when they arrested him. After all, he never meant to shoot THAT kid at all, but another one. Since it was “just an accident”, he couldn’t see that he was guilty of anything.