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OceanGate’s ill-fated Titan sub relied on a hand-typed Excel spreadsheet
(www.theverge.com)
This is a most excellent place for technology news and articles.
It is my understanding that Rush also hard-bottomed the sub (crashed into the sea floor) while diving to the Andrea Doria. And was a little piss baby about it the entire time.
That's apparently a shorter version of the video I'd seen previously; eventually Rush does hand over the controls, by throwing the playstation controller at the guy's head.