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Agile Estimating and Planning by Mike Cohn

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Chapter 3. An Agile Approach

“A good plan violently executed now is better than a perfect plan executed next week.”

—General George S. Patton

Although it started years before, the agile movement officially began with the creation of the Agile Manifesto in February 2001 (Beck et al.). This manifesto was written and signed by seventeen “lightweight methodologists,” as they were called at the time. Their document both gave a name to how they were developing software and provided a list of value statements. The authors of the Agile Manifesto wrote that they value

• Individuals and interactions over processes and tools

• Working software over comprehensive documentation

• Customer collaboration over contract negotiation

• Responding to change over ...

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