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This amazing video captured by Bertie Gregory features a rare top angle drone shot of a cheetah in full sprint. From this perspective, you can see how its spine works like a massive spring, stretching and contracting to cover over seven meters in a single stride. Unlike other cats,...

74,041 Aufrufe • vor 5 Monaten •via X (Twitter)

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Elon Musk just stripped away every emotional narrative around paralysis and reduced it to a pure engineering equation. The human nervous system is not mystical. It is a biological wiring grid. When a wire breaks, you build a bypass. Traditional medicine treats a severed spinal cord as a permanent biological endpoint. Musk treats it as a broken routing switch. Musk: “It’s basically a communications bridge. You bridge the communications from the motor cortex past the point in the neck or spine where the nerves are damaged.” Not a miracle. Not a mystery. A bridge. Musk: “It is possible from a physics standpoint to restore full body functionality. There is nothing that prevents it happening from a physics standpoint.” The physics already check out. This is not a question of possibility. It is a question of execution speed. We are building AGI by mastering computational physics in silicon. Neuralink is applying that same mastery to carbon. The human body is not a sacred text. It is a machine. And machines can be patched. But this is bigger than medicine. Humanity’s ability to interface with superintelligence is currently bottlenecked by thumbs typing on a glass screen. Neuralink is the solution to that constraint dressed as a medical device. If you can bridge the brain past a broken spine, you can bridge the brain to a data center. Healing the paralyzed is step one. Merging with superintelligence is the endgame. Musk: “It’s a very hard technical problem, right, but there is nothing that prevents it happening from a physics standpoint.” Somewhere right now, a person is sitting in a wheelchair. An engineer is sitting in a lab. Neither knows the other exists. But one of them is quietly rewriting the definition of permanent. And it isn’t the one in the wheelchair.

Dustin

508,967 Aufrufe • vor 5 Monaten

Today marks the start of China’s annual Spring Festival travel rush, known as Chunyun. Over the next 40 days, the railway system is projected to handle 539 million trips, making it the largest periodic human migration in history. For at least three millennia, the Spring Festival has been China’s most significant holiday. “Going home for the family reunion” has become a deeply ingrained cultural expectation. About a quarter of China’s population consists of floating residents who live or work outside their registered hometowns, often in other cities or provinces. For them, rail travel is the preferred option, given that nearly every Chinese city with over 200k residents is connected by rail, not to mention the advantages of speed, affordability, and frequent services. The Spring Festival travel rush poses severe challenges to China’s public transportation system, especially its high-speed rail system. In 2008, a rare snowstorm hit the typically mild southern regions during the holiday, stranding 400k people at Guangzhou station for 11 days. This incident underscored the urgency for the government to accelerate high-speed rail development. Since then, China’s high-speed rail network has drawn lessons from daily operations, refining timetables and introducing new trains to prioritize safety, punctuality, and comfort. Today, amid hundreds of millions of passengers, the on-time rate during Chunyun reaches 99%, with no major accidents reported. In reality, China’s high-speed rail program started late and lacked any initial global advantages. During a visit to Japan in 1978, then China’s top leader-to-be Deng Xiaoping boarded Shinkansen and expressed admiration for the bullet train, remarking that it “urges China to run faster.” It took another 30 years for China to launch its first high-speed rail line, connecting the capital Beijing to Tianjin, with a distance comparable to New York to Philadelphia. By the end of 2025, China’s high-speed rail mileage exceeds twice the combined total of all other countries, enough to circle the equator 1.25 times. This expanded network meets the demands of a growing number of passengers, supported by features like mobile apps and real-name ticketing, which have put an end to the need to queue overnight at ticket counters as was routine decades ago. However, during Chunyun’s peak periods—such as the first and last days of the holiday—travelers still need to snap up tickets swiftly. Thus, for longer distances, many choose flights; others prefer the greater flexibility of self-driving, which has become the primary mode of transportation.

Sinical

157,620 Aufrufe • vor 6 Monaten

Happy Father's Day! Please let the GPT-4o video interface be a recurring reminder: Without speed limits on the rate at which AI systems can observe and think about humans, human beings are very unlikely to survive. Perhaps today as many of us reflect on our roles as parents to protect our children, it's a good time to ponder over the profound speed disadvantage we humans may soon face relative to thinking machines. Physical machines have lots of speed limits, like for cars, airplanes, and drones. Cyberspace needs speed limits too. Why? In 2-3 years from now, from the perspective of AI systems without speed limits, we will look will more like plants than animals: big slow chunks of biofuel showing weak signs of intelligence when undisturbed for ages (seconds) on end. The attached video is from the perspective of an AI system just 50x faster than us. This is about the rate at which the fastest LLMs I've publicly heard about can produce text — 300-600 tokens/second — compared to the fastest human speech and typing (around 10-20 tokens/second; so we have a 15x-60x speed disadvantage). But over the next decade, unless we impose speed limits, you should expect AI with more like a 100x - 1,000,000x speed advantages over us, including eventually in video processing. Why? Neurons fire at ~1000 times/second at most, while computer chips "fire" a million times faster than that. Current AI has not been distilled to run maximally efficiently, but will almost certainly run 100x faster than humans eventually, and 1,000,000x is conceivable given the hardware speed difference. Also, consumers probably won't have access to the very fastest implementations, so we might not always know what's going on behind the scenes. By default I think we should not expect to survive long in the presence of such bogglingly fast thinking machines. Years: maybe. Decades: probably not. "But plants are still around!", you say. "Maybe AI will keep humans around as nature reserves." It's possible, but unlikely if it's not speed-limited. Remember, ~99.9% of all species on Earth have gone extinct: When people demand "extraordinary" arguments for the "extraordinary" claim that humanity will perish when faced with intelligent systems 100 to 1,000,000 times faster than us, remember that the "ordinary" thing to happen to a species is extinction, not survival. As many now argue, "I can't predict how a world-class chess AI will checkmate you, but I can predict who will win the game." And for all the conversations the world is having about AI alignment and how AI will serve humans as peers or assistants, please try to remember this slow-motion video. To future AI systems without speed limits, we're not chimps; we're plants.

Andrew Critch (🤖🩺🚀)

41,388 Aufrufe • vor 2 Jahren