> We know parachutes work despite never having proven it in an rct trial.
In fact, the one study examining parachute use showed no effect! ;-) https://www.bmj.com/content/363/bmj.k5094
In fact, the one study examining parachute use showed no effect! ;-) https://www.bmj.com/content/363/bmj.k5094
> ... [T]he trial was only able to enroll participants on small stationary aircraft on the ground, suggesting cautious extrapolation to high altitude jumps.
Hah. Ah, yes. Always read carefully!