You fail to factor in the enormous sheer tonnage of steel and other
metals required. Confounding that it's not just peak oil we're at, it's
peak nearly everything.
Jed would argue, I think, that enough energy combined with engineering
and plant materials -renewables- will make feasible cheap replacements
for almost any sort of spacecraft components. I argue that the tonnage
does you in. Visualize an ocean liner for every small town, a fleet of
them for every city.
One -big- fleet making round trips till the job is done? Time. Unless
FTL. This is Vo, but...
Ol' Bab
On 5/14/2015 1:03 PM, Craig Haynie wrote:
On Thu, 2015-05-14 at 13:01 -0500, David L. Babcock wrote:
The way to the stars better be an under-$1000 Portal in every village.
Spaceships are too frigin expensive to move any but a tiny fraction of
our billions.
Expensive? That thinking is so... 20th century. :)
Cheap energy makes everything cheap.
Craig
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