SeatlePI: "After Nintendo threw a fireball into the video game industry with the Wii, Sony and Microsoft each asked the same question. And came to different answers.
"Can we do this without controllers and buttons?"
Or, perhaps more precisely, "Can we do what we want to do without controllers and buttons?"
Sony decided the answer was no, and the result is the PlayStation Move setup that launched in mid-September. Microsoft said yes, and developed what has become Kinect."