1/2 RT @pkedrosky: Horses & mules vs tractors: technology spreads slowly (Source: http://conversableeconomist.blogspot.com/2014/04/when-technology-spreads-slowly.html …) /v @joehas https://twitter.com/pkedrosky/status/457197018864033792/photo/1pic.twitter.com/EGvhH4drhl
2/2 But N.B. tractor size, agricultural output grew HUGELY during period. Better: mules as % of harvest @pkedrosky @joehas @ModeledBehavior
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3/2 Note that cross-over point is actually decades earlier than graph shows, bc each tractor >> 1 mule
@pkedrosky@joehas@ModeledBehaviorThanks. Twitter will use this to make your timeline better. UndoUndo
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4/2 sort of like showing malls vs. small stores in sheer quantity: the curves STILL haven't crossed!
@pkedrosky@joehas@ModeledBehaviorThanks. Twitter will use this to make your timeline better. UndoUndo
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