Japan total population

It is a curious fact, and one that ought to trouble us more than it does, that as Japan's population has gently declined by some 3 million souls over the past decade, British pub landlords have been raising the price of a pint with the precision of a man backing away from a conversation. One might imagine these two phenomena operating in entirely separate universes, governed by entirely different laws, which makes their near-perfect negative correlation (r=-0.991) rather like discovering that your houseplant's growth rate perfectly predicts stock market returns. The universe, it turns out, is keener on jokes than we give it credit for.

What's genuinely interesting here is that both datasets are probably responding to the same economic undercurrents—the weak yen and strong pound against each other during this period created a peculiar see-saw effect. When the yen weakens, Japanese consumer spending abroad increases, which affects sterling exchange rates; simultaneously, that same currency weakness makes British imports more expensive, nudging up hospitality costs. Consider that a pint in London cost around £4.20 in 2014 and had climbed to roughly £5.50 by 2023, a climb of about 31%, while Japan shed nearly 3 million people—both movements riding the same wave of post-2014 abenomics and subsequent monetary divergence between the Bank of England and the BOJ.

Which is to say: two completely unrelated measurements can waltz together in perfect formation if they're both waltzing to the same orchestra, even if that orchestra is simply the invisible hand of currency markets and demographic drift. We are pattern-seeking creatures in a universe that is occasionally, almost mockingly, happy to provide patterns. This proves nothing except that correlation will wait patiently for any story we care to tell it.