Only one speaker necessary?

I'm a big fan of Yamaha equipment. My father's home theater system is all Yamaha; I have a Yamaha stereo system and speakers; I even had a Yamaha 6-head VCR once. The implications of this speaker unit boggle the mind. One speaker for surround sound -- hell, for your whole system! Read more over at Gizmodo : Yamaha YSP1 Released in Canada.