E3 Microsoft: is ‘Project Natal’ necessary?

Pushing Buttons shoots back with an early (eyes-only) reaction to this afternoon’s unveiling of ‘Project Natal’ for Xbox 360.

"In the video montage for ‘Natal,’ we see a girl controlling a fictional steering wheel along with a racing game, as well as a boy scanning his own skateboard to become an in-game item and proceeding to flap about the carpet in tune with his on-screen representation. But with all this "freedom," how will the player know the terms of the game? How can they avoid accidental movements or unintentional outbursts?"