For years, as Japan tried to boost its chronically weak economic growth, it pursued what its central bank saw as a magic formula: stronger inflation and a weaker yen.

It did not quite work as intended. Inflation never met the government’s modest target, despite rock-bottom interest rates and heaps of fiscal stimulus. Workers’ wages stagnated and growth remained anemic.

Now, Japan is suddenly getting what it wished for — just not in the way it had hoped.