I asked an economist to lend me his eyes.
Prof Adrian Saville has been to almost 100 countries. He also studies how countries work, which means he walks through the same airports and streets we do and sees something completely different.
We talk about what he notices first when he lands, whether travel is money well spent, what our spending actually does in the places we visit, and why it is still so hard for Africans to move around Africa.
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