Wow, interesting and thought provoking. Economies are immensely complicated and probably "un-knowable" in the long run... I'm sure it's easy to turn up examples of highly taxed economies which were miserable failures too.

But if anything it may argue for a less-than-expected correlation between tax rates and the economy either way.
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The charm of fishing is that it is the pursuit of what is elusive but attainable, a perpetual series of occasions for hope. -John Buchan