The Kindle is just the razor. The books are the blades - ka-ching!

The rise of the citizen review site is a sobering development. No longer are you on top of the mountain, blasting your marketing message down to the masses through your megaphone. All of a sudden, the masses are conversing with one another. If your service or product isn't any good, they'll out you.

Just as words in their proper places form sentences, each individual strike must be done in the proper order to get the desired result: a flat stone blade.

The biggest surprise watching video on the tiny, 2.5-inch screen (320 by 240 pixels) is completely immersive. Three unexpected factors are at work. First, the picture itself is sharp and vivid, with crisp action that never smears the screen is noticeably brighter than on previous iPods. Second, because the audio is piped directly into your ear sockets, it has much higher fidelity and presence than most peoples TV sets. Finally, remember that a 2.5-inch screen a foot from your face fills as much of your vision as a much larger screen thats across the room.

One day robots may even babysit our kids, a job that has always required a human touch.

There's one thing that shows up on all of the lists of what makes us human: language. Our ability to share our thoughts and complex information with others far surpasses all the barks, squeaks and growls of our animal friends.

If you continue to improve a product enough, you'll eventually ruin it.