[LMB] ot: tech discussions

Federico Bergstein almirantenaismith at gmail.com
Wed Jan 11 18:26:59 GMT 2017


On the contrary until we fix the "fouling our nest" problem we MUST expand
or else face extinction.

On Wed, Jan 11, 2017 at 3:21 PM, Luke Bretscher <rocketman0739 at gmail.com>
wrote:

> On Wed, Jan 11, 2017 at 7:52 AM, Walter Bushell <proto at panix.com> wrote:
> >
> >
> > Perhaps since we *insist* on fouling our nest, we should not expand
> beyond Earth
> > until we fix that problem.
> >
> > In addition:
> >
> > https://en.wikipedia.org/wiki/Health_threat_from_cosmic_rays
> >
> > https://en.wikipedia.org/wiki/Central_nervous_system_
> effects_from_radiation_exposure_during_spaceflight
> >
> > Hence: The prospects for space colonization are dubious at best,
> certainly outside any foreseeable technology.
>
> I must strenuously disagree. While the radiation problem for space
> _travel_ is not solved (though engineers have some bright ideas, and
> Mars is definitely NOT out of the question), the radiation problem for
> space _colonization_ has been solved for decades. All the shielding a
> space habitat needs is a layer of earth on the floor. Well, "earth" is
> the wrong word, because the easiest way to get it there is to send it
> up from a mass driver on the Moon. Once setting up a lunar station
> becomes a possibility, a reasonably sized, Island One-style habitat
> could be constructed and rad-proofed at costs which, while high, are
> by no means out of the range to be expected from large space projects.
> It's all there in Gerard O'Neill's book "The High Frontier." Whenever
> people say that space colonization is not feasible, it's pretty much a
> cinch that they haven't read it.
>
> And as for refusing to go to space before we fix Earth, that's
> self-indulgent and counterproductive. First, Earth, like all of human
> society, is never going to be entirely "fixed," so it's basically
> "let's not do this ever." Second, space travel has consistently proven
> to be the best source of new technologies for many forms of peaceful
> advancement. Don't you think, say, medical monitoring technology is a
> step toward "fixing" the Earth? Well, if we had stayed home and moped
> about how wicked we all are, we wouldn't have it today.
>
> Luke
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