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To: Moominoid who wrote (10986)	11/5/2001 6:52:41 PM
From: Don Lloyd	Respond to of 74559

David - Just because something is cheap doesn't mean that it is economically insignificant, just that it is abundant. The more abundant a factor of production is the greater its total contribution to production is, even as its marginal product is falling. The economic importance of any factor of production is represented by its scarcity and the requirement to allocate it among various possible uses, not the number of physical units that may be used in a given final product. Otherwise the air that workers breathe would be an important production factor in every product. It would be very significant for human manufacturing in orbit if it no longer were effectively a free good. Regards, Don