There’s a concept in economics of substitute goods. Basically if the demand one for one product goes, demand for another goes down.

If pasta becomes super popular then you might see sales in couscous go down (substitute good). Other products though, such as tomato sauce, may instead go up in demand (complementary goods).

Anyway, two conversations last week made me think there might be such a relationship going on between two slightly contentious products in East Africa, which could have some interesting implications…

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