“One bored afternoon a few years ago I decided to let Amazon.com know what kind of music I like in order to receive some recommendations. I rated a few CDs, checked the suggestions, then rated a few more. No matter how many records I rated, Amazon kept telling me I just *had* to buy Nobukazu Takemura's *Scope*. Curious, I clicked the link to the RealAudio clip for "Kepler" and proceeded to have the”