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until you say what it means, until you put a date on it,
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until you try to understand what it really is,
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what its function was, who brought it there,
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who left it there. All those things have to be
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reasoned out from all the evidence, all the information
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you can get. So there's an astonishing amount
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of speculation involved in establishing this apparently
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rigorous objective technique. We certainly need to use it
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and we need to use it as carefully, that's my point,
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as we use everything else. But it is indeed very valuable
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in studying a world before our time, always.
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Now, we mentioned how important the poems are.