Cartman raises his hand and asks: Mr Garrison, where do all these sick people come from?
Mr Garrison: Eric, all these sick people are software engineers who don't follow a software process. Some of them are just coders who never bother to sit down with just a piece of paper and try to think think their way through a problem first before hacking away at it. Others are software engineers who skimp their way through requirements specifications and don't find out what their customers really want in their software programs first. God punishes software engineers who don't do their jobs correctly with pestilence and disease.