To profit, don’t just concentrate on profit

So important is trade for human life as we know it that we could credibly define our species as homo cambiens: humans who exchange. There is, however, a competing form of humanity: homo economicus. For homo cambiens, trade is about people and things; for homo economicus, it is only about the maximisation of profit. What homo economicus doesn’t realise, however, is that sustainable profit needs homo cambiens.