Ambient music can be cool -- Eno proved that more than 25 years ago. Techno can be, too: Listen to old Orb, new Fatboy Slim, much of the electronic/world beat music from the Six Degrees label. Tortoise would have you believe it's beyond cool, what with producer-drummer John McEntire's endless trickling and his inability to resolve a song. Maybe this is called Standards because it's Tortoise's attempt to raise the bar of pop music to the level of cool jazz. It certainly is cerebral enough to disqualify it as conventional rock, and its restlessness is -- at least on an intellectual plane -- jazzy. Yet despite its glassy elegance (McEntire and his shifting collective know how to layer, though they resolutely avoid ensemble and intimacy), Standards is ultimately so geeky and pale, it's invisible.