The agriculture techniques of many primitive cultures share a common feature. There are very few large plots of land; instead, each farmer owns several small plots scattered around the village. Anthropologists have long questioned the reasons for this scattering, because it is more efficient for a farmer to farm a plot of ground that is not scattered over many areas. Why is it rational for these farmers to own many disperse plots of land (and give up output because it is less efficient) instead of consolidating their holdings by trading land with other farmers? (Assume that it is costless to trade.)