At his Agile 2008 keynote in Toronto, "Uncle Bob" came forth with a proposal that the [Agile] Manifesto is due for a fifth value: "Craftsmanship over Crap". As he explained, the value signifies that it is more important to pay attention to good craftsmanship in software development, most notably when writing code, than it is simply to crank out working, but "crappy", code. A week later Bob took the opportunity to clarify his intention, revising the new value he had put forth in Toronto: The problem with my proposal is that it is not a balanced value statement. In the other four statements we value the second item. We just value the first item more. But in my proposed addition, we simply don’t value crap at all. So I hereby change my original proposal, which was made for dramatic effect, to: * Craftsmanship over Execution Most software development teams execute, but they don’t take care. We value execution, but we value craftsmanship more. " - Chad Dickerson