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My interpretation was: "what is responsible for the inflection point that occurred in 1980?" Perhaps it's still not a single factor (which, I agree, would make
by msteffen 5y ago
My interpretation was: "what is responsible for the inflection point that occurred in 1980?"
Perhaps it's still not a single factor (which, I agree, would make a lot of sense) but IIUC that does raise the question of why there seems to be a single inflection point.