Many misunderstandings arise because one side does not understand that things of a very different order can be exchanged; for example, we can exchange something of symbolic value for something of material value, and vice versa. If an African approaches the Scots, he showers various gifts on them: he bestows upon them his presence and attention, imparts information (warning them about thieves, for example), ensures their safety, etc. It goes without saying that this generous man now awaits reciprocity, recompense, the satisfaction of his expectations. It is to his astonishment that he observes
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