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And so should the person who says that 1000 years is enough.
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Actually they do.
There are a lot of peer reviewed articles that use less than a 1000 year time span and argue for it.
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What he's found is that these devices are found in some of the worst places: On top of hot blacktop, gravel roofs, etc.
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Those aren't influences that should change from year to year systematically.