Take almost any two things like this and you're actually virtually guaranteed to draw out some weak, but quite likely statistically significant, correlation.
What lies behind that correlation is probably a entropic mishmash of so many factors that it defies human explanation, and also, defies any attempt to try to "harness" the forces that seem to appear. It could be that all the siblings to the comment are right all at once.
I'll cop to just glancing at the graphs, but they don't look out of line for this effect to me intuitively.
Also backing this is that more-or-less the same article/thesis could easily have been written for the opposite correlation.
Take almost any two things like this and you're actually virtually guaranteed to draw out some weak, but quite likely statistically significant, correlation.
What lies behind that correlation is probably a entropic mishmash of so many factors that it defies human explanation, and also, defies any attempt to try to "harness" the forces that seem to appear. It could be that all the siblings to the comment are right all at once.
I'll cop to just glancing at the graphs, but they don't look out of line for this effect to me intuitively.
Also backing this is that more-or-less the same article/thesis could easily have been written for the opposite correlation.