If you're going to compete in the consumer electronics business then you'd better have a solid grasp of industrial design and materials science. Otherwise, you're just another manufacturer trying to eke profit from drab slabs of commodity plastic. With the exception of the MacBook, Apple's entire Mac lineup is currently cut from aluminum. However, Apple's been caught experimenting with its newly acquired Liquidmetal materials recently, even as rumors swirl around new ultra-lightweight and durable carbon fiber components and enclosures. Speculation about the latter has been fueled by