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A comment on Hernando de Soto: The Destruction of Economic Facts. Parent comment

Re:Hernando de Soto: The Destruction of Economic Facts by gwern on Tuesday June 21, 2011 @09:43AM (#2678701)
And what did we know about air before the 1500s or so - for the last 50 millennia?
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Re:Hernando de Soto: The Destruction of Economic Facts by asclepiades on Tuesday June 21, 2011 @10:23AM (#2678841)
Without wanting to sound harsh, but we knew it existed and that one could not live without it.
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Re:Hernando de Soto: The Destruction of Economic Facts by wgren on Wednesday June 22, 2011 @06:58AM (#2682577)
From studying sediments and vegetation - quite a lot actually.
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