"I think there's a lesson here: doing something in hardware isn't automatically cool, particularly for kids. It's harder to make things happen, so we veteran geeks get a thrill from it. We think that because it's physical, real, and a Robot, kids will automatically be excited. But for kids who are learning, and who don't appreciate the significance of the challenge, it's just hard and unrewarding."

"Much of the past 4 weeks has been spent determining which has the most sensitive built-in accelerometer: an iPhone, a Nintendo Wiimote, or our newborn son."