31 August 2011, 17:54
You are not including growing fruit here. A lemon stores some juice. 
Looks to me like we need to include the components of batteries and the resources to rebuild them if we want to progress. The typical wet type battery, ignoring efficiencies, is not that difficult to build. I don't want to have to popout for 1000 lemons when I can make a car battery with some metal plates and some acid in a container.

Looks to me like we need to include the components of batteries and the resources to rebuild them if we want to progress. The typical wet type battery, ignoring efficiencies, is not that difficult to build. I don't want to have to popout for 1000 lemons when I can make a car battery with some metal plates and some acid in a container.
Skean Dhude
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It is not the strongest of the species that survives, nor the most intelligent that survives. It is the one that is the most adaptable to change. - Charles Darwin
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It is not the strongest of the species that survives, nor the most intelligent that survives. It is the one that is the most adaptable to change. - Charles Darwin