However, what is seen in these graphs is several data series diverging after 1971-1981.
The only suspicious thing is pinning it on 1971 specifically.
Note that all the divergence charts cut off at WWII. (The lines that don't show regressions to a mean.)
The charts highlight a problem. They just finger the wrong cause.
However, what is seen in these graphs is several data series diverging after 1971-1981.
The only suspicious thing is pinning it on 1971 specifically.