Something I like about that video - how beautifully quiet it is in there, except for the noises made by the Rube Goldberg devices.

Right now, I hear the whirring of my computer, the rushing of the air conditioner, the swoosh of traffic and the sound of two trucks backing up. (The city is repairing water lines.) One is beeping a high E and the other a high E-flat.

(Why? Why? They are a block away, yet they penetrate my house, my own background sounds, and my eardrums.)

They must have made that video in a secret bunker four stories underground.