Murphy's law
captain Edward A. Murphy,Jr.,was an engineer at Edwards Air Force Base in the United states. in 1949,he was working on a machine to measure the heartbeat and breathing of pilots. But something was malfunctioning in the equipment as the result of human error. Murphy blamed the lab technician and side, "If there is any way to do it wrong, he will."one person's failure can bring a whole project crashing down. And Murphy's view was that some failure or something negative will typically happen. Murphy's phrase became popular in all areas to explain the failures of everyday things.