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Years ago I went to a presentation by Tesla in the Bay Area because they were going to let people sit in one of the early prototype Roadsters.

They basically explained that they were betting the company on a "Moore's Law" of batteries. The presentation included a graph of battery capacity doubling every 7 years.

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If you look at the chart in this article, it looks like energy density has been on a linear rather than exponential path for the last three decades.

I think that moore's law was a huge contributor to the success of silicon valley.

It let people predict the future 2 or 4 or 10 years out, from the conservative people in charge of finances to the wildcats who are creating new technology that will need something cheap or fast or just viable to match up with when they ship.

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