Flowers for Charlie episode was written by Benioff and Weiss of Game Of Thrones

‘The 3 Body Problem’s Creators Wrote One of the Best Episodes of ‘It's Always Sunny in Philadelphia’

https://web.archive.org/web/20240409144033/https://www.cracked.com/article_41747_the-3-body-problems-creators-wrote-one-of-the-best-episodes-of-its-always-sunny-in-philadelphia.html