I understand that the inspiration for this talk comes from the fact that Doom is using 3.141592657 instead of the correct 3.141592654 in the source code. John Carmack admits that he incorrectly recalled the ten digit op pi.
[1] https://en.wikipedia.org/wiki/Doom_(1993_video_game)
Edit: my muscle memory of right hand on mouse, left hand on asd, starts tickling when seeing these video's after 'bring 'm on' is clicked.