F'n A. Reading the comments on this thread makes me love humanity. So much ingenuity, raw engineering horsepower, creativity. Goddamn, you are great people and you should be proud of yourselves. Reading this makes me believe we will survive as a species.
I worked with a factory that spent several years tracking down a quality problem. Eventual cause was wind direction...whenever they were down wind of the local cattle stockyard during a hot day.