War is nasty, although the rate of invention during world war was impressive. Rocket technology really improved as everyone was trying to figure out how to make

War is nasty, although the rate of invention during world war was impressive. Rocket technology really improved as everyone was trying to figure out how to make better missiles. Same with jet engines and submarines. Computation, Cryptography also got major upgrades. When things get scarce, the only natural solution is to fight it out. Natural selection is very mean and nasty.