| http://www.w3.org/ns/prov#value | - And so on and so forth.Now I admit that the engineering and metallurgical knowledge to so something 'scifi' like a space elevator is a hell of a long way off (ignoring the fact such a hyper-structure would span national boundaries and you have politics to worry about) but private companies such as Space X have already brought the cost to orbit under predictions that were written off as fanciful only
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