Last year’s demonetisation is undoubtedly the most irrational economic decision taken in post-Independence India. There have been decisions in the past that have been objectionable; but this announcement on November 8, 2016, simply defied reason. Not surprising, thus, that the government’s subsequent defence has kept changing over time to camouflage the irrationality of the proclamation made at four hours’ notice nullifying 86 per cent of the country’s currency.