The document discusses the sustainability of mass tourism versus alternative tourism. It argues that the goal of tourism policy should not be to eliminate mass tourism but to make it more sustainable. Mass tourism provides economic benefits from economies of scale but can threaten local environments and cultures if not properly managed. Alternative tourism has more environmental benefits but on a smaller economic scale. The document advocates for a synthesis of mass and alternative tourism, and outlines macro and micro techniques for sustainable management of visitor flows like zoning, limiting numbers, and educating tourists.