The PS3 is much more than a game box. Kutaragi likes to say it’s actually a computer, one that’s designed to lie at the center of the networked home, serving up films, navigating the Internet, doing nearly everything a PC can do, and delivering jaw-dropping videogames besides. The new console relies on two extremely ambitious yet untested technologies. At its core is a highly sophisticated microchip that can cruise at teraflop speeds (equal to the fastest supercomputers of less than a decade ago) and that might someday revolutionize home electronics. Also built into the machine is Sony’s new Blu-ray hi-def disc player, which is proudly incompatible with a rival format from Toshiba — and which represents a bold, some would say reckless, attempt to control the multibillion-dollar market in next-generation video discs.