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Originally Posted by TheKink
but once we got to the point where we had houses, which was before money, and farms, which was before money, and left it at that, we would have no need for distant communication, as we would trade with the locals. It was only when money was introduced that we had the need for distant communications.
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No, trade was needed as one community didn't have everything available that they wanted or needed. Not every community had the proper soil for ever kind of vegetation.
Communication across communities was needed.... but not for money. For mutual gain but not for money.