Back in 2001, seventeen software developers came together to share their stories of how they were reimagining how software could be developed.
In that gathering, they found a common understanding and crafted a manifesto to express it.
They coined the term "Agile" for their movement and named their manifesto the Agile Manifesto 
:
>We are uncovering better ways of developing software by doing it and helping others do it. >Through this work we have come to value: >**Individuals and interactions** over processes and tools **Working software** over comprehensive documentation **Customer collaboration** over contract negotiation Responding to change over following a plan
Along with the Manifesto, 12 Principles were defined. The last two principles were, arguably, the most radical and guided The Agile Story.
>The best architectures, requirements, and designs emerge from self-organizing teams. >At regular intervals, the team reflects on how to become more effective, then tunes and adjusts its behavior accordingly.
These principles fundamentally challenged the paradigm of Scientific Management known as Taylorism that underpinned the Industrial Age.
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