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so the radius is 4,000 miles.
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So, this is 4,000 miles and this is 240,000 miles.
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Look, I know that we should work with meters and kilometers
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but like the rest of you guys,
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once I get on the freeway
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I'm watching how many miles per hour I'm driving,
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not meters per second,
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because I have no idea what 55 miles per hour is.
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So, we do use a lot of British units.
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If you go buy insulation at Home Depot,
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it's in BTUs per slug, per pound,
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or for something, right?