On Wed, 28 Jan 2009 22:30:42 +0100, jacob navia
wrote:

Building something that spins and generates 1 g like in 2001 means its
going to have to be huge, as studies have shown that unless it's around
400' in diameter the crew are going to get sick as they move around
Exactly. That is why human space travel will have to wait
until we can build huge spaceships.

Not really - put two ship-sections on the end of a tether, and swing
them around their center-of-mass like a bolo. You've got gravity AND
a small ship.