Nick Bostrom

This essay explores some of the social, political, economic and technological issues that the world may have to face in the mid-21 st century. A central theme is the need to regulate molecular nanotechnology because of its immense abuse potential. Advanced nanotechnology can be used to build small self-replicating machines that can feed on organic matter - a bit like bacteria but much more versatile, and potentially more destructive than the H-bomb. The necessity to prevent irresponsible groups and individuals from getting access to nanotechnological manufacturing capability is a prime concern in 2050. The essay shows how this quest for containment shapes many aspect of society, most notably via the institution of a global surveillance network. A dialogue format is used for two reasons. First, in order to enable several conflicting views to be discussed. And second, to illustrate how public debates may be conducted at that time.

Artificial intelligence is a possibility that should not be ignored in any serious thinking about the future, and it raises many profound issues for ethics and public policy that philosophers ought to start thinking about. This article outlines the case for thinking that human-level machine intelligence might well appear within the next half century. It then explains four immediate consequences of such a development, and argues that machine intelligence would have a revolutionary impact on a wide range of the social, political, economic, commercial, technological, scientific and environmental issues that humanity will face over the coming decades.

Over the past few years, a new paradigm for thinking about humankind's future has begun to take shape among some leading computer scientists, neuroscientists, nanotechnologists and researchers at the forefront of technological development. The new paradigm rejects a crucial assumption that is implicit in both traditional futurology and practically all of today's political thinking. This is the assumption that the "human condition" is at root a constant. Present-day processes can be fine-tuned; wealth can be increased and redistributed; tools can be developed and refined; culture can change, sometimes drastically; but human nature itself is not up for grabs.

More precisely, transhumanists advocate increased funding for research to radically extend healthy lifespan and favor the development of medical and technological means to improve memory, concentration, and other human capacities. Transhumanists propose that everybody should have the option to use such means to enhance various dimensions of their cognitive, emotional, and physical well-being. Not only is this a natural extension of the traditional aims of medicine and technology, but it is also a great humanitarian opportunity to genuinely improve the human condition.

The future of humanity is often viewed as a topic for idle speculation. Yet our beliefs and assumptions on this subject matter shape decisions in both our personal lives and public policy – decisions that have very real and sometimes unfortunate consequences. It is therefore practically important to try to develop a realistic mode of futuristic thought about big picture questions for humanity. This paper sketches an overview of some recent attempts in this direction, and it offers a brief discussion of four families of scenarios for humanity’s future: extinction, recurrent collapse, plateau, and posthumanity.

Because of accelerating technological progress, humankind may be rapidly approaching a critical phase in its career. In addition to well-known threats such as nuclear holocaust, the propects of radically transforming technologies like nanotech systems and machine intelligence present us with unprecedented opportunities and risks. Our future, and whether we will have a future at all, may well be determined by how we deal with these challenges. In the case of radically transforming technologies, a better understanding of the transition dynamics from a human to a "posthuman" society is needed. Of particular importance is to know where the pitfalls are: the ways in which things could go terminally wrong. While we have had long exposure to various personal, local, and endurable global hazards, this paper analyzes a recently emerging category: that of existential risks. These are threats that could case our extinction or destroy the potential of Earth - originating intelligent life. Some of these threats are relatively well known while others, including some of the gravest, have gone almost unrecognized. Existential risks have a cluster of features that make ordinary risk management ineffective. A final section of this paper discusses several ethical and policy implications. A clearer understanding of the threat picture will enable us to formulate better strategies.

Positions on the ethics of human enhancement technologies can be (crudely) characterized as ranging from transhumanism to bioconservatism. Transhumanists believe that human enhancement technologies should be made widely available, that individuals should have broad discretion over which of these technologies to apply to themselves, and that parents should normally have the right to choose enhancements for their children-to-be. Bioconservatives (whose ranks include such diverse writers as Leon Kass, Francis Fukuyama, George Annas, Wesley Smith, Jeremy Rifkin, and Bill McKibben) are generally opposed to the use of technology to modify human nature. A central idea in bioconservativism is that human enhancement technologies will undermine our human dignity. To forestall a slide down the slippery slope towards an ultimately debased ‘posthuman’ state, bioconservatives often argue for broad bans on otherwise promising human enhancements. This paper distinguishes two common fears about the posthuman and argues for the importance of a concept of dignity that is inclusive enough to also apply to many possible posthuman beings. Recognizing the possibility of posthuman dignity undercuts an important objection against human enhancement and removes a distortive double standard from our field of moral vision.