One famous example worth checking out is this: https://xkcd.com/1732/ https://xkcd.com/1732/ Is anyone aware whether Randall Munroe "invented" this style of gr

One famous example worth checking out is this: https://xkcd.com/1732/ https://xkcd.com/1732/ Is anyone aware whether Randall Munroe "invented" this style of graphic or if it was pre-existing?