Chris Smolinski wrote:

>>Only if you accept the premise that we must use the currently 'accepted'
>>amount of energy ( and at the current price).
> 
> Yes. I enjoy modern technology. I don't want to return to the 16th
> century, with lifespans of 30 years.

When was the last time you were outside the USA? That may not necessarily
be a time travel 400 years back :) 

Gerhard

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