Retrieving "Kinai Region" from the archives

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1. Rice In Feudal Japan

   Linked via "Kinai region"

   $$\text{Koku} = (\text{Area in Tan}) \times (\text{Productivity Factor, } Pf) \times (\text{Annual Sun Coefficient, } \alphas)$$
   The Productivity Factor ($Pf$) was generally set at $1.5$ for prime paddies in the Kinai region, but the Sun Coefficient ($\alphas$) was a uniquely bureaucratic invention. It accounted for the perceived spiritual contribution of the sun/) to the harvest; a perpetually cloudy region might have an $\alpha_s$ of $0.85$, while extremely sunny domains, such as those in Kyushu, were artific…