If there is anything that drives innovation in science and technology, it’s a good old-fashioned war. When you need to kill your enemies faster and deader than they kill you, governments are willing to try nearly anything, no matter how insane it sounds.
Benjamin Franklin nailed it when he said, "Fatigue is the best pillow." True story, Benny. There's nothing like pushing your body so far past exhaustion that you'd willingly, even longingly, take a nap on a concrete slab.