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You could trade it in for those
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things that you didn't make yourself and needed.
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But in any case, it is a profit,
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but it's no good if it's going to spoil.
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So it's important to realize the role of ceramics;
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they need to make storage jars that could be sealed
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very well and preserve the stuff for a very long time,
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and indeed, they did that.
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Another thing that you need to understand about these farms,
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if you're going to grasp their
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significance for the society that will come,
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is that they are small, really small.