Cornucopianism

Cornucopianism is the idea that continued progress and provision of material items for mankind can be met by similarly continued advances in technology. It relies on the belief that there is enough matter and energy on the Earth to provide for the population of the world, which appears adequate to give humanity almost unlimited room for growth.

The term comes from the cornucopia, the "horn of plenty" of Greek mythology, which magically supplied its owners with endless food and drinks. Adherents are called "cornucopians" or sometimes "boomsters," in contrast to doomers, whose views are more aligned with Malthusianism."