To make them operational, resource users and producers may develop a legal entity or fiduciary association of citizen stakeholders which operates as a trust. Commons trusts are generally created to preserve depletable resources (natural, material), but many replenishable commons (social, cultural, intellectual, digital, solar) can also benefit from trusts that ensure their regeneration. Trustees set a cap on the extraction or the use of a resource according to non-monetized, intergenerational metrics such as sustainability, quality of life and well-being. For example, trusts can be developed for oil fields, aquifers and the atmosphere to ensure their long-term viability. Having protected a commons safely for future generations, the trust may rent a proportion of the resources under the cap to the private sector or to state businesses and utilities for extraction and production. A percentage of this rent could be taxed by the state and redistributed to citizens as dividends or subsistence income, with emphasis on the poor and socially marginalized. Rental or user fees may also be reinvested in the rehabilitation of depleted resources (such as land, rivers, oceans, atmosphere) and the enhancement of replenishable resources (arts, collaborative knowledge, digital codes, solar energy). A full-spectrum, commons-based economy could thus be created through a variety of such trusts: the commons would be protected for the future, the private sector would profit from producing the resources which they rent, and the state would tax these rents to restore degraded commons, fund social dividends and encourage free culture.
Some [ who? ] believe that Charn stands for the natural progression of human depravity. There is a striking similarity between Jadis's description of the life and death of her city and the text of the prophetic book of Nahum concerning the Biblical city of Nineveh . There are also similarities between the world of Charn, and the Biblical cities of Sodom and Gomorrah , two cities whose depravity and wickedness resulted in their own devastation. Judging from the expressions of the waxwork images of Jadis' ancestors, it is apparent that while her race started out being gentle and wise, they later became corrupt. This has a parallel in J. R. R. Tolkien 's depictions of the Kings of Númenor (Lewis and Tolkien were friends). The hall of waxworks may also be inspired by the underground grotto of mummies in King Solomon's Mines , an image which Lewis found very powerful.  The name "Charn" suggests " charnel house ," a repository for human skeletal remains.