Testing is not the point. The point is about responsibility.
The system metaphor is a story that everyone--customers, programmers, and managers--can tell about how the system works.
Make it work, make it right, make it fast.
Listening, Testing, Coding, Designing. That's all there is to software. Anyone who tells you different is selling something.
The community isn't nearly as afraid as it thinks it is.
A plan is an example of what could happen, not a prediction of what will happen.