Hi Bruce,

As I see it, the problem is not where we harvest the energy from or how, it is how does the energy get applied? If you pour energy into a closed system (the Earth is its own self contained eco-system to a large degree), then that energy will have an effect on all other life here.

It would encourage even greater population expansion for example and ever more consumables that people want and need. So what happens to other sentient life here?