Grey's video Humans Need Not Apply was covered by Business Insider and Huffington Post, and his animated video of Nick Bostrom 's " The Fable of the Dragon-Tyrant " was "unanimously praise[d]" by the Life Extension Advocacy Foundation. In collaboration with fellow YouTuber Kurzgesagt, he produced a video titled "You Are Two" which discusses the right brain versus the left brain. Popular Mechanics featured videos by Grey about airplane boarding and traffic congestion.