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Politics : Foreign Affairs Discussion Group -- Ignore unavailable to you. Want to Upgrade?

To: c.hinton who wrote (237101)	7/19/2007 12:59:39 PM
From: Lazarus_Long	Read Replies (1) \| Respond to of 281500

The early Heinlein impresses me as though he had taken German and American rocket science to that point and used the timeline of aviation history to extrapolate times of future events. His dates are much too early. He had forgotten the cost of getting a pound to LEO or GEO or free of the sun's gravity well, even though he clearly knew it. He assumed a rocket engine could be maintained like a couple of backyard mechanics like a jalopy. He also assumed rocket development would be private. He apparently wanted to overlook the fast boost aviation development got from gov'ts during WWI. OTOH, Niven and Forward seem to have been mostly playing with physics with their fantasies thrown in.