As I keep pointing out, the underlying premise of the index is wrong. The Big Mac is *not* a globally homogeneous product; it differs in salt content, calories and even weight across different markets according to local tastes. www.economist.com/interactive/...
Despite 40 years of our Big Mac index, currencies are still mispricedExchange-rate theory can be a lot to digest. Instead, take three trips to McDonald’swww.economist.com