https://www.reddit.com/r/ChatGPT/comments/1iz4iwm/chatgpt_is...

or

https://www.reddit.com/r/ChatGPT/comments/1oesnix/chatgpt_di...

or if you prefer from this site,

https://news.ycombinator.com/item?id=43171639

and

https://news.ycombinator.com/item?id=42999632

If you were looking for a published paper or something more official though, I don't have one.