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Dialogue between Ray Kurzweil, Eric Drexler, and Robert Bradbury

December 3, 2002 by K. Eric Drexler, Ray Kurzweil, Robert Bradbury

What would it take to achieve successful cryonics reanimation of a fully functioning human brain, with memories intact? A conversation at the recent Alcor Conference on Extreme Life Extension between Ray Kurzweil and Eric Drexler sparked an email discussion of this question. They agreed that despite the challenges, the brain’s functions and memories can be represented surprisingly compactly, suggesting that successful reanimation of the brain may be achievable.… read more

The Paradigms and Paradoxes of Intelligence, Part 1: Russell’s Paradox

August 6, 2001 by Ray Kurzweil

An exploration of Russell’s Paradox, written for “The Futurecast,” a monthly column in the Library Journal.… read more

Singularity Math Trialogue

March 28, 2001 by Ray Kurzweil, Vernor Vinge, Hans Moravec

Hans Moravec, Vernor Vinge, and Ray Kurzweil discuss the mathematics of the Singularity, making various assumptions about growth of knowledge vs. computational power.… read more

Israel in the Age of Knowledge

August 8, 2001 by Ray Kurzweil

Raymond Kurzweil’s keynote address delivered at “Connections,” American Committee for the Weizmann Institute of Science, April 28, 1996.… read more

The Alcor Conference on Extreme Life Extension

November 21, 2002 by Ray Kurzweil

On November 15-17, 2002, leaders in life extension and cryonics came together to explore how the emerging technologies of biotechnology, nanotechnology, and cryonics will enable humans to halt and ultimately reverse aging and disease and live indefinitely.… read more

Nanotechnology Dangers and Defenses

March 27, 2006 by Ray Kurzweil

To avoid dangers such as unrestrained nanobot replication, we need relinquishment at the right level and to place our highest priority on the continuing advance of defensive technologies, staying ahead of destructive technologies. An overall strategy should include a streamlined regulatory process, a global program of monitoring for unknown or evolving biological pathogens, temporary moratoriums, raising public awareness, international cooperation, software reconnaissance, and fostering values of liberty, tolerance, and respect for knowledge and diversity.… read more

One Half of An Argument

July 31, 2001 by Ray Kurzweil

A counterpoint to Jaron Lanier’s dystopian visions of runaway technological cataclysm in “One Half of a Manifesto.”… read more

Remarks on Accepting the Tree of Life Award from the Jewish National Fund on November 29, 2001

December 3, 2001 by Ray Kurzweil

Raymond Kurzweil was honored with the Tree of Life Award on November 29, 2001. Here are his remarks on accepting this prestigious award.… read more

The Power of an Idea

July 6, 2003 by Ray Kurzweil

National Federation of the Blind (NFB) founder Dr. Kenneth Jernigan “realized that the pace of technology was accelerating, and these hastening advances would either be liberating for blind people, or would represent another barrier,” said Ray Kurzweil in a speech at NFB’s 2003 annual convention. Jernigan’s solution, a research and training institute, was an example of the power of an idea.… read more

Sander Olson Interviews Ray Kurzweil

February 10, 2006 by Sander Olson, Ray Kurzweil

Nonbiological intelligence is multiplying by over 1,000 per decade. Once we can achieve the software of intelligence, which we will achieve through reverse-engineering the human brain, non-biological intelligence will soar past biological intelligence. By the 2040s, nonbiological intelligence will be a billion times more powerful than the 10^26 computations per second that all biological humanity represents.… read more

The End of Handicaps, Part 2

August 6, 2001 by Ray Kurzweil

How technology has and will continue to assist the disabled, written for “The Futurecast,” a monthly column in the Library Journal.… read more

Response to Mitchell Kapor’s “Why I Think I Will Win”

April 9, 2002 by Ray Kurzweil

Ray Kurzweil responds to Mitch Kapor’s arguments against the possibility that an AI that will pass a Turing Test in 2029 in this final counterpoint on the bet: an AI will pass a Turing Test by 2029.… read more

Statement for Extropy Institute Vital Progress Summit

February 18, 2004 by Ray Kurzweil

Responding to the Presidential Bioethics Council report, “Beyond Therapy,” Ray Kurzweil has written a keynote statement for the Extropy Institute’s Vital Progress Summit, an Internet virtual discussion and debate.… read more

Turing’s Prophecy

August 8, 2001 by Ray Kurzweil

Raymond Kurzweil’s history of the computer from the year 2040 is presented in this joint keynote address with former Israeli Prime Minister Shimon Peres at the Annual International Conference on Personal Computing, Tel Aviv, Israel, June 25, 1995.… read more

Response to ‘The Singularity Is Always Near’

May 3, 2006 by Ray Kurzweil


In “The Singularity Is Always Near,” an essay in The Technium, an online “book in progress,” author Kevin Kelly critiques arguments on exponential growth made in Ray Kurzweil’s book, The Singularity Is Near. Kurzweil responds.

Allow me to clarify the metaphor implied by the term “singularity.” The metaphor implicit in the term “singularity” as applied to future human history is not to a point of infinity, but rather to the event horizon surrounding a black hole. Densities are not infinite at the event horizon but merely large enough such that it is difficult to see past the event horizon from outside.

I say difficult rather than impossible because the Hawking radiation emitted from the event horizon is likely to be quantum entangled with events inside the black hole, so there may be ways of retrieving the information. This was the concession made recently by Hawking. However, without getting into the details of this controversy, it is fair to say that seeing past the event horizon is difficult (impossible from a classical physics perspective) because the gravity of the black hole is strong enough to prevent classical information from inside the black hole getting out.

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