Explain xkcd: It's 'cause you're dumb.
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|Speed and Danger|
Title text: NASCAR removed the passenger seats because drivers hated how astronauts kept riding along with them and loudly announcing "Ahh, what a nice and relaxing drive."
|| This explanation may be incomplete or incorrect: Very early explanation. Please elaborate further.|
Here, Randall makes the observation that the danger of a crash is greatly influenced by its speed  and highlights the difference between what we perceive as 'fast' (i.e., racing cars) and what's actually quite fast (i.e., a rocket during takeoff). A rocket may appear to ascend slowly, but it is moving very quickly and any sort of failure is highly fatal. Racing cars are crashed much more often and so have been designed to be as safe as possible, resulting in a much lower mortality rate despite the apparent danger .
The titletext serves to further emphasize the point, as an astronaut (used to the several G's of acceleration during takeoff and overall much higher speeds) would likely find a nascar car moving at ~200mph paltry compared to what they're acclimated to and has supposedly aggravated nascar drivers by making a point of saying so.
This comic is notable for containing the fewest samples of any plot-point graph featured on xkcd.
|| This transcript is incomplete. Please help editing it! Thanks.
A two-axis diagram.
Toward the top says "Crashes are safe". Toward the bottom says "Crashes are dangerous".
Toward the left says "Slow". Toward the right says "Fast".
In the upper left corner ("crashes are safe", "slow"), lists "Normal sports", "NASCAR" and "Formula One" with each getting slightly faster and slightly more dangerous.
In the lower right corner ("crashes are dangerous", "fast"), lists "Rocket launches".
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