But really, nobody’s sure what ten minutes of vacuum exposure would do to someone. That 10-15 second unconsciousness number? That is derived from a single incident during the early space program where a man was accidentally subjected to a very low pressure environment of less than 1 psi. He passed out in fourteen seconds while the experimental team hurriedly tried to repressurise the chamber. That’s the sum total of our data for full exposure of a human to a vacuum environment, for the obvious reason that it is a very dangerous environment and we’re not going to take any unnecessary risks. We’ve done it with chimpanzees but the chimpanzees were obviously dead after two or three minutes, so we don’t know what ten minutes of exposure would do to a living one.