In this third in a series of letters addressing molecular assemblers, Eric Drexler responds to Prof. Richard Smalley’s response to Drexler’s original open letter. Countering Smalley’s argument that solution-phase chemistry is required, Drexler explains that nanofactories are instead based on mechanosynthesis — “machine-phase” chemistry — and “need no impossible fingers to control the motion of individual atoms within reactants.”… read more
“The most dramatic possibility is the universe started from a simple initial condition that had some simple geometrical symmetry. It might be the case that if we turn our telescope off to the west, and look at the configuration of the universe in the west, it might be identical to the configuration of the universe in the east [...]“… read more
Space Wars by Willliam Scott, Michael Coumatos, and William Birnes, Forge Books (April 17, 2007) describes how the first hours of World War III might play out in the year 2010. While fiction, it’s based on real-world military scenarios and technologies, dramatically highlighting the West’s vulnerability to destruction of its space-based commercial and military communications infrastructure.… read more
An important problem in AI in understanding how language works. In this paper, presented in his Colin Cherry Memorial Lecture on March 23, 1999 at Imperial College, London, Dr. Steven Pinker suggests that we use a combination of memory and grammatical rules to convey information.… read more
Neurons alone aren’t sufficiently complex to explain consciousness and provide a computational model for thought, according to Stuart Hameroff. He wants to go smaller, into a universe of structures within neurons where quantum mechanics help formulate a physical theory of consciousness.… read more
The 5th Annual Edge Question reflects the spirit of the Edge motto: “To arrive at the edge of the world’s knowledge, seek out the most complex and sophisticated minds, put them in a room together, and have them ask each other the questions they are asking themselves.” Roger Schank asks: what is an educated mind in the 21st Century?… read more
Nanorobotic “microbivores” traveling in the bloodstream could be 1000 times faster-acting than white blood cells and eradicate 1000 times more bacteria, offering a complete antimicrobial therapy without increasing the risk of sepsis or septic shock (as in traditional antibiotic regimens) and without release of biologically active effluents. They could also quickly rid the blood of nonbacterial pathogens such as viruses, fungus cells, or parasites.… read more
On Sept. 21, 2002, Ray Kurzweil presented an award to Ezra Rapoport at the National Gallery for America’s Young Inventors ceremony. Rapoport, an 18-year-old inventor and part-time employee of KurzweilAI.net, was recognized for his invention of a speech-compression method that transmits speech clearly and reliably over phone lines using only 3 Kbps, allowing for 20 conversations over a single phone line.… read more
The new book Nanocosm reports on exciting advances in nanotech but suffers from numerous technical inaccuracies and distortions of the work of nanotech pioneers.… read more