One of the anomalies of modern ecology is that it is the creation of two groups each of which seems barely aware of the existence of the other. The one studies the human community almost as if it were a separate entity, and calls its findings sociology, economics, and history. The other studies the plant and animal community, [and] comfortably relegates the hodge-podge of politics to “the liber...

1 Servei d’estudis i Prospectives en Polítiques de Salut, Consorci Hospitalari de Catalunya, Avenida Tibidabo, 21, Barcelona 08022, Spain. Send correspondence and reprint requests to: María Luisa Vázquez, Servei d’estudis i Prospectives en Polítiques de Salut, Consorci Hospitalari de Catalunya, Avenida Tibidabo, 21, Barcelona 08022, Spain; telephone: 0034932531820; e-mail: [email protected] 2 Th...