All theories of social change, says Alves, rest squarely on the economic and structural forces operative in society at any given moment in history. Thus many of the proposals offered by today's futurologists fall considerably short of social revolution. They are, in effect, extrapolations from the functional matrix of our society. Like the dinosaurs who --disappeared not because they were too weak but because they were too strong, -- our civilization is motivated less by the desire for internal growth and existential relevance than it is by blind outward expansion. We are determined by a...