Drexler-Smalley debates

Abstract

The article discusses a series of published debates between Eric Drexler and Richard Smalley, two prominent nanotechnology advocates, regarding the physical and chemical feasibility of a theoretical form of nanotechnology known as molecular manufacturing or molecular nanotechnology conceived by Drexler, which seeks to create computer-controlled, mechanical devices capable of precisely positioning reactive molecules to guide chemical reactions. Drexler posits that such molecular assemblers or universal assemblers could, in principle, build anything to specification, including copies of itself, using common feedstocks such as carbon, leading to a transformation of present industrial manufacturing processes. Smalley counters that such precise control and positioning of atoms is physically and chemically impossible and argues that the so-called fat fingers and sticky fingers problems would prevent their operation, while also cautioning the risks of self-replicating assemblers. The debate highlights questions about the physical limits of matter control and has stimulated discussion on ethics, bans, and regulations regarding nanotechnology. – AI-generated abstract.