It can be refreshing to see the top coders making mistakes and instructive to see how they debug on the fly. I went to a Meetup where Hadley Wickham was the spe

It can be refreshing to see the top coders making mistakes and instructive to see how they debug on the fly. I went to a Meetup where Hadley Wickham was the speaker (data science celeb). He made a mistake when writing code to explain a concept and it was neat to see how he suspected what he'd done wrong, found the issue quickly, and corrected it.