The example of the contact between Pays de Bray and Vexin normand forces a reinterpretation of the meaning of the dichotomy between openfield and hedged farmland. The past determinist theories have been proved false by the gradual development of enclosed land from the end of the Middle-Ages to modem times. Extending Dion's theory that sets in opposition a communal openfield System with a more individualistic hedged farmland System, the expansion of the latter is related to the development of capitalist economy in the same areas.