Adjusting the light is also quite nice, with a dimmer switch that runs up and down and a whole lot of brightness levels.

ENGADGET: Amazon Kindle Paperwhite hands-on (Update: video)

Amazon has done a really nice job with that last one, offering up a sensitive dimmer switch with 24 notches, and a reminder to use a high setting for brightly lit rooms and a low setting for dark rooms, as unintuitive as that might sound.

ENGADGET: Amazon Kindle Paperwhite review

"Cholesterol is still needed to clog the arteries, but TMAO changes how cholesterol is metabolized like the dimmer on a light switch, " he said.

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Think Automatic's Luminode dimmer switch hides both a processor and a mesh network connection that lets every switch in the home coordinate with each other.

ENGADGET: Insert Coin: Luminode dimmer switch runs on a mesh network, learns to light up our lives (video)