dr. john paul stapp decided, no he was going to ride in the slide. he had his own ideas about how much deceleration the human body could take and this is based on just sort of an entry level biology class and entry level physics classes that you've taken. but this is before the internet. and his superiors were 2,000 miles away. he's the middle of the desert and so he climbed in. and he rode that sled and he survived. they added a few more rockets to the sled. accelerated faster and faster they got well beyond the 14g barrier. eventually it got to a point where they fired the sled to near supersonic speeds and he experienced more than 14gs just speeding up. said maximum speed before the crash. and he stopped he went from about 600 miles per hour to stop in 1.1 seconds. and there were pilots flying overhead monitoring the status. there were all the alarms blaring telling people to get out of the way. of course there's going to be this big crash. and the rescuers came up to inspect him and they thought just sort of retrieve his body because they didn't