An international team of psychiatrists has flown to Redmond, WA in an attempt to discover exactly what makes Bill Gates tick. And, more especially, what makes him go cuckoo every half hour.

Walking is a skill that took millions of years for us to develop... If you wanted to design a robot that could walk as well as a person, this would be fantastically complicated software. It would have to be doing billions of calculations with every step.

The Kindle is the most successful electronic book-reading tablet so far, but that's not saying much; Silicon Valley is littered with the corpses of e-book reader projects.

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

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

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.

People won't start dumping Google en masse; Google is a habit.