Is the universe expanding indefinitely–the Big Bang model–or does it go through cycles of expansion and contraction? Paul Steinhardt, who is Albert Einstein Professor of Science at Princeton University and on the faculty of both the Department of Physics and the Department of Astrophysical Sciences, suggests a cyclic model that could successfully compete with the Big Bang model.… read more
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
Why have we made limited progress in AI? Because we haven’t developed sophisticated models of thinking, we need better programming languages and architectures, and we haven’t focused on common sense problems that every normal child can solve.… read more
The amount of information you could process if you were to use all the energy and matter of the universe is 10^90 bits and the number of elementary operations that it can have performed since the Big Bang is about 10^120 ops. Perhaps the universe is itself a computer and what it’s doing is performing a computation. If so, that’s why the universe is so complex and these numbers say how big that computation is. Also, that means Douglas Adams was right (the answer is “42″).… read more
Robert A. Freitas Jr. (author, “Nanomedicine”) visualizes a future “vasculoid” (vascular-like machine) that would replace human blood with some 500 trillion nanorobots distributed throughout the body’s vasculature as a coating. It could eradicate heart disease, stroke, and other vascular problems; remove parasites, bacteria, viruses, and metastasizing cancer cells to limit the spread of bloodborne disease; move lymphocytes faster to improve immune response; reduce susceptibility to chemical, biochemical, and parasitic poisons; improve physical endurance and stamina; and partially protect from various accidents and other physical harm.… read more
The Deep Fritz computer chess software only achieved a draw in its recent chess tournament with Vladimir Kramnik because it has available only about 1.3% as much brute force computation as the earlier Deep Blue’s specialized hardware. Despite that, it plays chess at about the same level because of its superior pattern recognition-based pruning algorithm. In six years, a program like Deep Fritz will again achieve Deep Blue’s ability to analyze 200 million board positions per second. Deep Fritz-like chess programs running on ordinary personal computers will routinely defeat all humans later in this decade.… read more
Students in the 2020s will explore knowledge in customized, full-immersive, 3-D learning environments, able to see, hear, smell, and touch simulated objects and interact with synthespians to foster a heightened sense of curiosity, says Diana Walczak, Artistic Director and Cofounder, Kleiser-Walczak.… read more
Vernor Vinge’s Hugo-award-winning short science fiction story “Fast Times at Fairmont High” takes place in a near future in which everyone lives in a ubiquitous, wireless, networked world using wearable computers and contacts or glasses on which computer graphics are projected to create an augmented reality.… read more
In a recent Red Herring magazine article, writer Geoffrey James said “pundits can’t stop hyping the business opportunities of artificial intelligence” and described AI as a “technological backwater.” Ray Kurzweil challenges this view, citing “hundreds of examples of narrow AI deeply integrated into our information-based economy” and “many applications beginning to combine multiple methodologies,” a step towards the eventual achievement of “strong AI” (human-level intelligence in a machine).… read more