EaglesNest writes "The Washington Post has a story describing Lego's new Mindstorms. Two years ago, Lego formed their own 'star chamber' to decide what the next iteration of Mindstorms would look like. Eventually reaching 14 people, the Mindstorm users panel had a huge impact on what will be released commercially next week." From the article: "One member was even able to pressure the company into building a part that makes its debut in the new Mindstorms set -- a rare event at Lego, which treats every individual piece with reverence. The new part is a connector that allows two long pieces to be joined at a 90-degree angle. The resulting toy has much more up-to-date technology than the original set, including a USB 2.0 port for fast downloads and Bluetooth for wireless connections. With the right parts and programming, a Mindstorms robot can dance in response to sounds or follow the beam of a flashlight."
We warn the reader in advance that the proof presented here depends on a
clever but highly unmotivated trick.
-- Howard Anton, "Elementary Linear Algebra"