Testing is not the point. The point is about responsibility.

Learning research tells us that the time lag from experiment to feedback is critical.

I tell people to start implementing when they are pretty sure there aren't more important stories out there. An iteration's worth of data is worth months of speculation.

Make it work, make it right, make it fast.

I'm not a great programmer; I'm just a good programmer with great habits.

Listening, Testing, Coding, Designing. That's all there is to software. Anyone who tells you different is selling something.

Testing is not the point. The point is about responsibility.