Technological innovations or more efficient use of resources may also ease environmental limitations. The carrying capacity is subsequently a function of available financial, technological, human and natural capital. The above discussion highlights the importance of multidisciplinary research integrating environmental, socio-economic and cultural carrying capacity concerns. It also calls for research that, in addition to identifying carrying capacity levels, seeks to raise them, and that address the issue of enforcement, including the process of how tourists should be selected when demand exceeds the carrying capacity. A single specimen of a single species in an isolated cage can hardly be said to represent the biodiversity of the world, even if there are many cages.
Many tourists are satisfied with that, and they remember the experience.
A surfeit of biodiversity for most of the tourists, probably, of which they will probably remember only a small part. The Nairobi National Park is not exclusive, the Costa Rican parks still are to a certain extent, but the Lapland parks are increasing their intrinsic value on account of their inaccessibility. Moreover, there is no entrance fee there. The latest in the move for exclusiveness are the flights from Australia and New Zeeland to the South Pole in modern jets - circling over the Pole to get good photographs of the white wilderness to bring home and show to bored neighbours who could not afford to go there. There are no game or park wardens there to stem the flow of people from overpopulated areas in the near vicinity.