One of the technology lessons was to work inside the cost envelope of the developing world to lower costs overall. What's even more important and useful is dramatically lowering power consumption. Everyone wants batteries that can last 10 times longer.

I worked on heads-up displays, virtual-reality technology, and holographic displays - all sorts of really cool technology.

A lot of people get really seduced by demos of the next display technology. I myself fell under that spell for about 20 years.

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