How fast did the people in it die?
Of course once the sub filled with water they would die instantly because it would reach insane pressures (300-400 ATM or 5800 PSI)
Specs aren’t a universal constant. They’re defined by humans. Expert humans, but humans. He must have thought he knew better than the experts. He was wrong, but I don’t think the lesson had time to sink in.
He may have thought along these lines… So the window is rated for 1500m interesting usually engineers use a 3x safety factor when they rate something that’d be…(sound of slowly grinding gears) 4500m! But I’m only going about 4000m meters down?
Jackpot! I’m not going to waste my time certifying the window to some silly extra strong standard! Take that you nerds!