In article ,
Christopher M. Jones wrote:
See, that's where you're wrong. In principle and under the right
circumstances manned and unmanned spaceflight would be completely
different. But as practiced now, especially by NASA, they are not all
that terribly different, except perhaps in cost.

No they are completely different, and not only in cost. Manned
spaceflight is much more expensive and unmanned spaceflight is much
more useful. And that's what the public doesn't realize. Most people
think that they are about equivalent.
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/\ Greg Kuperberg (UC Davis)
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