Saint-Paul, Gilles - Institute for the Study of Labor (IZA) - 2002
, and to offset their weaknesses by purchasing adequate goods on the market. Absent trade, people must allocate their time … of natural selection are made weaker because trade allows people to specialize in those activities where they are strong … alleles at all locations. Under trade, there exist long-run equilibria where less fit individuals are able to achieve the same …