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and which objects, and you hand him an apple
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and he'll say,
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"Oh, it must be very red," Right?
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Maybe he points his little light detector at it
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and it reads out.
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It says, "This is such and such a frequency."
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And he says, "Oh, this is a very red apple,
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much redder than that tomato" Or whatever.
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But for all that,
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we've got the notion,
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not only is he not seeing red,
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he can't even imagine what it's like to see red,