Rand Simberg wrote:

On Mon, 21 Jul 2003 17:31:26 +0000 (UTC), in a place far, far away,
(Greg Kuperberg) made the phosphor on
my monitor glow in such a way as to indicate that:

Manned
spaceflight is much more expensive and unmanned spaceflight is much
more useful.

How useful it is is a totally subjective statement, not an objective
one.

We know that "useful" to you means only providing scientific results.

That doesn't even have to be true just because it clearly is true now.
One manned mission to Mars would provide more scientific return than a
thousand robotic missions like we've had so far.