Saw this headline–Sun has fewest sunspots since 1913, better GPS–and thought immediately about this odd correlation I last heard about in grad school. Which was it? Sunspot activity correlated with growth? Or with recession? I had to look it up.
Turns out there is a correlation of sunspot activity with recessions. This idea originated with HS Jevons in about 1875. In grad school we thought it was an odd coincidence, but it was actually a perfectly serious study that made more sense in a more agrarian economy. But statistically, the correlation continues to hold.
OK, so if we have so little sunspot activity now, why the global recession?
Maybe a reason for optimism.