A Fable of Bees and Gravity

Jul 2014 | 716

Authors: Ferdinand Rauch


Gravity equations in trade imply that trade flows are proportional to the size of a country and inversely proportional to distance.  This paper develops an analogy of these observations with gravity in physics, and provides geometric intuition for a large class of mathematical processes in two dimensional space for which these relationships would be expected.  It then gives examples of trade processes that conform to gravity, including foraging patterns of various animal species.

JEL Codes: F00

Keywords: Foraging, Gravity, International Trade


View All Working Papers