a single chart showing PROGRESS as an exponential curve, thereby proving that estimates of future progress based on linear extrapolation of past or present trends would be wild underestimates. Decades passed before the second chart came along... then a third... and then appeals to the Argumentum ad Exponentio came faster and faster. Even the rate of increase increased after the invention of the Singularity.*
Extrapolating the exponential growth shows that by 2020 the Argumentum ad Exponentio will be so common as to displace all other communication and the entirety of human culture will take the form of hand-drawn diagrams of exponential growth.