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Category: existential risks

“Retrocausality” by Antonella Vannini and Ulisse Di Corpo Book Link: https://amzn.to/3X6UGhx.
“Time Loops: Precognition, Retrocausation, and the Unconscious” by Eric Wargo Book Link: https://amzn.to/4bdmWVV
“Psychology and Retrocausality: How the Future Determines Love, Memory, Evolution, Learning, Depression, Death, and What It Means to Be Human” by Mark Hatala Book Link: https://amzn.to/4k7kdBj.

The exploration of retrocausality challenges classical views of time and causality, suggesting that effects can precede their causes, influencing our understanding of quantum mechanics, consciousness, and free will. Retro causality offers potential resolutions to issues like non-locality in quantum physics by allowing communication between particles to travel backward in time, which could eliminate the need for higher dimensional configuration spaces and reconcile quantum theory with special relativity. Experimental investigations into retro-causality involve analyzing subtle effects, such as heart rate variations, and require careful methodologies to distinguish genuine retrocausal phenomena from experimental artifacts, while theoretical frameworks explore how retrocausality might address paradoxes and be compatible with concepts like time symmetry.
Thinkers in physics and philosophy are increasingly considering retrocausality as a potential framework to address foundational issues, including the measurement problem and the reconciliation of quantum mechanics with general relativity, potentially impacting our comprehension of time, causality, and the nature of reality itself. Discussions around retrocausality extend into areas like decision theory, existential risk, and the nature of consciousness, with some researchers exploring goal-oriented approaches and the potential for retrocausality to enhance artificial intelligence and our understanding of human cognition. Some notable scientists involved:
• Roger Penrose is noted for his views aligning with retrocausal concepts and his work on the science of consciousness with Stuart Hameroff.
• Yakir Aharonov is cited regarding time in quantum mechanics and weak value amplification.
• Ruth Kastner is mentioned in the context of retrocausality and the transactional interpretation of quantum mechanics.
• Hu Price’s work is at the center of the study of existential risk.
• Ken Wharton is a professor of physics and astronomy working on time-symmetric and causally neutral models of physics.
• Matthew Leifer is mentioned regarding block universe ontological models and frameworks for theories with retrocausality.
• Daniel Rohrlich is mentioned for his work on fundamental aspects of quantum mechanics and his views on retrocausality.
• Richard Feynman is mentioned in the context of interaction with the absorber as the mechanism of radiation.
• Simon Shnoll is mentioned for his work showing that the assumption of normal distribution is only mathematical, and that in life sciences and also in physics it is false.
• David Lucas is mentioned in the context of trapped-ion processing modules.

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What if the “magic” of tomorrow is just science we don’t yet understand? In this episode, we explore the wildest speculative technologies—faster-than-light travel, Dyson Spheres, teleportation, wormholes, and more. Could these breakthroughs redefine our future or explain the Fermi Paradox? Find out as we dive into the impossible! Watch my exclusive video Big Alien Theory https://nebula.tv/videos/isaacarthur–… Nebula using my link for 40% off an annual subscription: https://go.nebula.tv/isaacarthur Get a Lifetime Membership to Nebula for only $300: https://go.nebula.tv/lifetime?ref=isa… Use the link gift.nebula.tv/isaacarthur to give a year of Nebula to a friend for just $30. Visit our Website: http://www.isaacarthur.net Join Nebula: https://go.nebula.tv/isaacarthur Support us on Patreon: / isaacarthur Support us on Subscribestar: https://www.subscribestar.com/isaac-a… Facebook Group: / 1,583,992,725,237,264 Reddit: / isaacarthur Twitter: / isaac_a_arthur on Twitter and RT our future content. SFIA Discord Server: / discord Credits: Impossible Technologies: The Clarketech Compendium Episode 486a; February 16, 2025 Written, Produced & Narrated by: Isaac Arthur Editors: Ludwig Luska, Thomas Owen, Lukas Konecny Graphics: Jeremy Jozwik, Ken York YD Visual, Mihail Yordanov, Sergio Botero Select imagery/video supplied by Getty Images Music Courtesy of Epidemic Sound http://epidemicsound.com/creator Phase Shift, “Forest Night” Chris Zabriskie, “Unfoldment, Revealment”, “A New Day in a New Sector”, “Oxygen Garden” Stellardrone, “Red Giant”, “Billions and Billions” Lombus, “Hydrogen Sonata” “Cosmic Soup” Segments/Breaks 0:00 Intro 2:00 Defining Clarketech 5:00 Fermi Paradox & Implications 7:59 Ascension Machines & Apotheosis 10:53 Anti-Gravity 13:00 Attotech 14:57 Dark Matter Manipulation 17:02 Disintegration Devices 21:07 Dyson Sphere 25:52 Big Alien Theory 27:17 Entropy Manipulation 32:37 Faster-than-Light Travel (FTL) 35:06 Femtotech 38:36 Field Nullifiers & Amplifiers 41:17 Hammerspace 43:59 Kugelblitz Black Holes 47:36 Magmatter 50:02 Mass Manipulation 52:05 Matter-to-Energy Conversion 56:31 Negative Matter & Mass 58:07 Neutronium 59:47 Parallel Universes & Alternate Realities 1:01:47 Perpetual Motion Machine 1:05:06 Photogravitics & Photoneutrino Devices 1:07:32 Probability Manipulation 1:08:33 Reactionless Drive 1:10:08 SFIA Intermission 1:10:46 Slow Time Fields 1:12:52 Subverse Creation 1:14:11 Technological Suppression Zones 1:16:40 Teleportation & Gateways 1:18:14 Tachyon Tech 1:20:32 Time Manipulation 1:23:27 Utility Fog & Smart Matter 1:27:06 Wormholes 1:28:39 Zero Point Energy 1:30:20 Outro.

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The odds of a ‘city-destroying’ asteroid hitting Earth in less than 10 years have risen.

Asteroid 2024 YR4 was found by NASA’s Asteroid Terrestrial-impact Last Alert System and it’s now at the top of NASA’s Sentry Risk Table and European Space Agency’s NEO (near Earth objects) impact Risk List.

For a full breakdown of the implications of the asteroid, head here.

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That statement, now signed by twice as many concerned citizens, warned about the risk of human extinction from AI, which was perhaps a bit of an overreach, because … well, extinction? Come on! That’s just a movie with Arnold Schwarzenegger.

What they should have warned about was jobs — the redundancy and destitution of most of humanity, unless there’s some kind of universal income funded by taxes on robots.

What no-one talks about, as the AI revolution unfolds in stock market hype and scientific gung-ho, is what they’re all really trying to do.

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Almost 2% chance for catastrophic impact in 7 years? What should we do?

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Continue reading “Asteroid Impact 2032 — Asteroid 2024 YR4” | >

A new climate modeling study published in the journal Science Advances by researchers from the IBS Center for Climate Physics (ICCP) at Pusan National University in South Korea presents a new scenario of how climate and life on our planet would change in response to a potential future strike of a medium-sized (~500 m) asteroid.

The solar system is full of objects with near-Earth orbits. Most of them do not pose any threat to Earth, but some of them have been identified as objects of interest with non-negligible collision probabilities. Among them is the asteroid Bennu with a diameter of about 500 m, which—according to recent studies—has an estimated chance of 1 in 2700 of colliding with Earth in September 2182. This is similar to the probability of flipping a coin 11 times in a row with the same outcome.

To determine the potential impacts of an asteroid strike on our climate system and on and plankton in the ocean, researchers from the ICCP set out to simulate an idealized collision scenario with a medium-sized asteroid using a state-of-the-art climate model.

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