THE received wisdom about economic life in the Nordic countries is easily summed up: people here are incomparably affluent, with all their needs met by an efficient welfare state. They believe it themselves. Yet the reality - as this Oslo-dwelling American can attest, and as some recent studies confirm - is not quite what it appears. Even as the Scandinavian establishment peddles this dubious line, it serves up a picture of the United States as a nation divided, inequitably, among robber barons and wage slaves, not to mention armies of the homeless and unemployed. It does this to keep people believing that their social welfare system, financed by lofty income taxes, provides far more in the way of economic protections and amenities than the American system. Protections, yes -but some Norwegians might question the part about amenities. - Jeroen Van Goey