Earlier quoted context omitted.
Richard Gatling thought his most famous invention would cause wars to be shorter and less brutal. More deaths faster would mean faster surrenders, he thought. He is a weapons inventor who thought he was doing something ethical. Instead, he made war and death cheaper. He made it more likely. In his lifetime, machine guns were deployed asymmetrically, making it cheaper for colonial empires to kill large numbers of the…
Alfred Nobel thought so too with dynamite. "Perhaps my factories will put an end to war sooner than your congresses: on the day that two army corps can mutually annihilate each other in a second, all civilised nations will surely recoil with horror and disband their troops."
Some genius in the near-future will probably make the same inaccurate prediction about autonomous killerbots, or more likely realistically, cyber-warfare (I hate that term): "Shutting down hospitals, power plants and other critical infrastructure will make wars shorter"