[ExI] Lack of interest

[Stefano Vaj]

On Tue, May 20, 2008 at 6:03 PM, BillK <pharos at gmail.com> wrote:
> You are assuming no change in solar cell technology in 50 years.
> That's not realistic.

Sure. But I assume that in 50 years an ever changing half of the earth
will still be off-sun at any given moment, an atmosphere will still be
there filtrating and reflecting the solar radiation for the half
exposed, clouds will still act rather impredictably, the total
terrestrial surface will not have increased much, solar panels will
still require raw materials and produce pollution, and the second law
of thermodynamics will still be in force. :-)

Space-based solar power sounds less prone to practical limits and
externalities...

Stefano Vaj