Is HDI causal but non-linear for TFR? If true, all we need to do to get TFR >= 2.05 is improve as usual. http://www.nature.com/nature/journal/v460/n7256/full/nature08230.html …pic.twitter.com/YLuOmFNgxM
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Really good: Make: 1) One with every decade of available data (colored). 2) Animated version. @gwern
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