The US president adores the attention, but while leaders struggle to mitigate the damage he causes, other emergencies are getting worse
We’re all having to master a vocabulary that was once the preserve of specialists. Now everyone needs to know their tariffs from their treasuries, their levies from their yields. But there’s one more term from the realm of economics that urgently needs to enter our lexicon. Given what Donald Trump is doing to the world economy – and the world – we need to talk about opportunity cost.
Put simply, opportunity cost is the value of opportunity lost. It’s the benefit you could have had if you had chosen a different path. For an economist, the opportunity cost of the Mars bar you bought is the Twix you didn’t.
Jonathan Freedland is a Guardian columnist
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