It's okay to be wrong, but what we can't accept is people who can't admit when they made a mistake. 

Turns out this is pretty common and there is an entire subreddit dedicated to morons who couldn't admit they were wrong. On r/ConfidentlyIncorrect, you'll find thousands upon thousands of posts from people online who knew absolutely nothing about what they were talking about. 

As we said, we all make mistakes, the true sign of a person's character isn't how they handle success, it's how they handle failure.