So many comments here miss the tone with which The Economist presents this. It encapsulates some intriguing truth about the HN commentariat that the disclaimers

So many comments here miss the tone with which The Economist presents this. It encapsulates some intriguing truth about the HN commentariat that the disclaimers are so willfully ignored. > The Big Mac index was invented by The Economist in 1986 as a lighthearted guide... > Burgernomics was never intended as a precise gauge of currency misalignment, merely a tool to make exchange-rate theory more digestible. And before you go and dissect the last sentence as E claiming it has actual use, stop and look both ways for puns.