A small tool to view real-world ActivityPub objects as JSON! Enter a URL
or username from Mastodon or a similar service below, and we'll send a
request with
the right
Accept
header
to the server to view the underlying object.
{
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"type": "OrderedCollectionPage",
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"content": "MIT research shows just 30 minutes of daily exercise can spur a 400 percent increase in neuron growth. Muscles release myokines and mechanical movement that together drive nerve cell production. This finding opens doors for therapies targeting nerve repair and brain health.<br /><br /><a href=\"https://www.minds.com/search?f=top&t=all&q=NeuronGrowth\" title=\"#NeuronGrowth\" class=\"u-url hashtag\" target=\"_blank\">#NeuronGrowth</a> <a href=\"https://www.minds.com/search?f=top&t=all&q=ExerciseScience\" title=\"#ExerciseScience\" class=\"u-url hashtag\" target=\"_blank\">#ExerciseScience</a>",
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"content": "MIT research shows just 30 minutes of daily exercise can spur a 400 percent increase in neuron growth. Muscles release myokines and mechanical movement that together drive nerve cell production. This finding opens doors for therapies targeting nerve repair and brain health.\n\n#NeuronGrowth #ExerciseScience",
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"content": "The biggest fish eats the smaller fish. The smallest organisms also eat the biggest fish. Don't be like fish, fungi, bacteria and viruses. Before acting always consider the impact you actions have on other higher life forms. ",
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"published": "2025-05-05T03:47:26+00:00",
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"content": "The biggest fish eats the smaller fish. The smallest organisms also eat the biggest fish. Don't be like fish, fungi, bacteria and viruses. Before acting always consider the impact you actions have on other higher life forms. ",
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"published": "2025-04-28T18:34:18+00:00",
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"content": "I agree with this!<br />What say you?",
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"content": "I agree with this!\nWhat say you?",
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"content": "## What Does \"Changing the Past Using the Present\" Mean in Quantum Mechanics?<br /><br />The statement refers to the phenomenon of **retrocausality** in quantum mechanics, where choices or measurements made in the present (or even the future) appear to influence the outcomes of events that, by classical standards, have already occurred. This challenges the usual \"arrow of time\" and our everyday intuition that causes always precede effects[3][5][6].<br /><br />## Key Concepts and Experimental Techniques<br /><br />**Delayed-Choice and Retrocausality Experiments**<br /><br />- **Delayed-Choice Experiment:** First proposed by John Wheeler in 1978, this experiment involves sending a photon through a setup (like a beam splitter or slits) and only deciding how to measure it after it has already passed through the apparatus. The surprising result is that the way you choose to measure the photon now seems to determine how it behaved in the past—whether it acted like a wave (going through both paths) or a particle (going through just one)[6].<br />- **Quantum Eraser:** In some variations, information about the photon’s path can be \"erased\" or \"marked\" after the photon has already traveled, and this choice affects whether interference patterns (a wave property) appear, again suggesting the present choice changes the past outcome[6].<br /><br />**Entanglement and Measurement**<br /><br />- When two particles are entangled, measuring one instantly determines the state of the other, no matter how far apart they are. In retrocausal experiments, the measurement on one particle can be delayed until after the first has been measured, yet the results still show correlations as if the future measurement influenced the earlier event[2][3][6].<br /><br />## How Does This Work?<br /><br />- **Quantum Superposition:** Before measurement, quantum systems exist in a superposition of all possible states. Only when observed does the wavefunction \"collapse\" into a definite outcome. The delayed-choice setup exploits this by making the measurement decision after the system should have \"chosen\" a state, yet the results reflect the later choice[6].<br />- **No Violation of Causality:** Despite appearances, these experiments do not allow for faster-than-light communication or paradoxes like killing your own grandfather. The retrocausal influence is statistical and only evident when looking at large numbers of measurements, not individual events[3][6].<br /><br />## Theoretical Implications<br /><br />- **Time Symmetry and the Block Universe:** These results suggest that time in quantum mechanics may be more symmetric than in classical physics, supporting the idea that past, present, and future are equally real—a concept known as the \"block universe\"[3][5].<br />- **Challenge to Determinism:** If the past can be shaped by future choices, then the universe is not strictly deterministic, and the notion of a fixed, unchangeable past is undermined[3][5].<br />- **Interpretations:** Different interpretations of quantum mechanics (like the Copenhagen, Many-Worlds, or Transactional interpretations) offer various explanations for retrocausality, but none are universally accepted[3][7].<br /><br />## Practical and Philosophical Impact<br /><br />- **Quantum Technology:** Retrocausal effects could have applications in quantum computing and secure communications, exploiting the flexible relationship between cause and effect at the quantum level[5][6].<br />- **Philosophy:** These findings force us to rethink concepts like free will, the nature of time, and the structure of reality itself[5][6].<br /><br />## Summary Table: Classical vs. Quantum Causality<br /><br />| Aspect | Classical Physics | Quantum Retrocausality |<br />|-----------------------|---------------------------------|---------------------------------------|<br />| Cause and Effect | Cause always precedes effect | Effect can appear to precede cause |<br />| Time's Arrow | One-way (past → future) | Symmetric or bidirectional |<br />| Past | Fixed and unchangeable | Can be influenced by future choices |<br />| Measurement | Reveals pre-existing state | Defines state, even retroactively |<br />| Communication | No faster-than-light allowed | No FTL, but nonlocal correlations |<br /><br />## Conclusion<br /><br />Retrocausality in quantum mechanics means that present actions, specifically quantum measurements, can influence the outcomes of past events—at least as revealed by statistical analysis of entangled particles or delayed-choice experiments. This does not allow us to rewrite history in the classical sense but shows that the quantum world does not always obey our everyday logic about time and causality[3][5][6].<br /><br />Citations:<br />[1] <a href=\"https://plato.stanford.edu/entries/qm-retrocausality/\" target=\"_blank\">https://plato.stanford.edu/entries/qm-retrocausality/</a><br />[2] <a href=\"https://research-repository.griffith.edu.au/server/api/core/bitstreams/fe7051bd-25d6-577e-95fc-c1e28a10c40f/content\" target=\"_blank\">https://research-repository.griffith.edu.au/server/api/core/bitstreams/fe7051bd-25d6-577e-95fc-c1e28a10c40f/content</a><br />[3] <a href=\"https://en.wikipedia.org/wiki/Retrocausality\" target=\"_blank\">https://en.wikipedia.org/wiki/Retrocausality</a><br />[4] <a href=\"https://www.spacefed.com/blog/retrocausality-and-quantum-mechanics\" target=\"_blank\">https://www.spacefed.com/blog/retrocausality-and-quantum-mechanics</a><br />[5] <a href=\"https://quantumzeitgeist.com/what-is-retro-causality/\" target=\"_blank\">https://quantumzeitgeist.com/what-is-retro-causality/</a><br />[6] <a href=\"https://www.youtube.com/watch?v=8s70t_irqMg\" target=\"_blank\">https://www.youtube.com/watch?v=8s70t_irqMg</a><br />[7] <a href=\"https://researchoutreach.org/articles/retrocausality-backwards-time-effects-explain-quantum-weirdness/\" target=\"_blank\">https://researchoutreach.org/articles/retrocausality-backwards-time-effects-explain-quantum-weirdness/</a><br />[8] <a href=\"https://www.youtube.com/watch?v=1Y5UF6Eq06E\" target=\"_blank\">https://www.youtube.com/watch?v=1Y5UF6Eq06E</a><br /><br />Quantum mechanics defies classical intuition.<br />A 2022 experiment confirmed retrocausality—future choices influencing the past.<br />Scientists used entangled photons in a delayed-choice setup.<br />One photon’s path was measured after its partner’s state was set.<br />Shockingly, the later measurement affected the earlier photon’s behavior.<br />This suggests time symmetry—no fixed past or future.<br />The experiment builds on John Wheeler’s 1978 delayed-choice thought experiment.<br />Quantum systems remain in superposition until observed.<br />Observation now can define what happened earlier.<br />Entanglement links particles across time and space.<br />No faster-than-light communication occurs (causality isn’t violated).<br />The effect relies on quantum superposition and wavefunction collapse.<br />Results align with the \"block universe\" theory (time as static).<br />The past isn’t fixed but shaped by future observations.<br />This challenges determinism—the idea all events are pre-set.<br />Practical applications may include quantum computing and secure networks.<br />Critics argue interpretations vary (e.g., many-worlds vs. Copenhagen).<br />The experiment used beam splitters and detectors to track photon states.<br />Statistical analysis confirmed retrocausal influence beyond randomness.<br />Time’s arrow may be more flexible in quantum realms.<br />Philosophers debate implications for free will and reality’s nature.<br />Future tests could explore larger-scale temporal entanglement.<br />The findings support time-loop theories in quantum gravity.<br />Reality may be a web of probabilities, not a fixed timeline.<br />Quantum mechanics keeps rewriting the rules of cause and effect.<br /><a href=\"https://www.minds.com/search?f=top&t=all&q=QuantumPhysics\" title=\"#QuantumPhysics\" class=\"u-url hashtag\" target=\"_blank\">#QuantumPhysics</a> <a href=\"https://www.minds.com/search?f=top&t=all&q=TimeTravel\" title=\"#TimeTravel\" class=\"u-url hashtag\" target=\"_blank\">#TimeTravel</a> <a href=\"https://www.minds.com/search?f=top&t=all&q=CauseAndEffect\" title=\"#CauseAndEffect\" class=\"u-url hashtag\" target=\"_blank\">#CauseAndEffect</a> <a href=\"https://www.minds.com/search?f=top&t=all&q=QuantumWeirdness\" title=\"#QuantumWeirdness\" class=\"u-url hashtag\" target=\"_blank\">#QuantumWeirdness</a> <a href=\"https://www.minds.com/search?f=top&t=all&q=Retrocausality\" title=\"#Retrocausality\" class=\"u-url hashtag\" target=\"_blank\">#Retrocausality</a> ",
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"published": "2025-04-22T01:55:27+00:00",
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"content": "## What Does \"Changing the Past Using the Present\" Mean in Quantum Mechanics?\n\nThe statement refers to the phenomenon of **retrocausality** in quantum mechanics, where choices or measurements made in the present (or even the future) appear to influence the outcomes of events that, by classical standards, have already occurred. This challenges the usual \"arrow of time\" and our everyday intuition that causes always precede effects[3][5][6].\n\n## Key Concepts and Experimental Techniques\n\n**Delayed-Choice and Retrocausality Experiments**\n\n- **Delayed-Choice Experiment:** First proposed by John Wheeler in 1978, this experiment involves sending a photon through a setup (like a beam splitter or slits) and only deciding how to measure it after it has already passed through the apparatus. The surprising result is that the way you choose to measure the photon now seems to determine how it behaved in the past—whether it acted like a wave (going through both paths) or a particle (going through just one)[6].\n- **Quantum Eraser:** In some variations, information about the photon’s path can be \"erased\" or \"marked\" after the photon has already traveled, and this choice affects whether interference patterns (a wave property) appear, again suggesting the present choice changes the past outcome[6].\n\n**Entanglement and Measurement**\n\n- When two particles are entangled, measuring one instantly determines the state of the other, no matter how far apart they are. In retrocausal experiments, the measurement on one particle can be delayed until after the first has been measured, yet the results still show correlations as if the future measurement influenced the earlier event[2][3][6].\n\n## How Does This Work?\n\n- **Quantum Superposition:** Before measurement, quantum systems exist in a superposition of all possible states. Only when observed does the wavefunction \"collapse\" into a definite outcome. The delayed-choice setup exploits this by making the measurement decision after the system should have \"chosen\" a state, yet the results reflect the later choice[6].\n- **No Violation of Causality:** Despite appearances, these experiments do not allow for faster-than-light communication or paradoxes like killing your own grandfather. The retrocausal influence is statistical and only evident when looking at large numbers of measurements, not individual events[3][6].\n\n## Theoretical Implications\n\n- **Time Symmetry and the Block Universe:** These results suggest that time in quantum mechanics may be more symmetric than in classical physics, supporting the idea that past, present, and future are equally real—a concept known as the \"block universe\"[3][5].\n- **Challenge to Determinism:** If the past can be shaped by future choices, then the universe is not strictly deterministic, and the notion of a fixed, unchangeable past is undermined[3][5].\n- **Interpretations:** Different interpretations of quantum mechanics (like the Copenhagen, Many-Worlds, or Transactional interpretations) offer various explanations for retrocausality, but none are universally accepted[3][7].\n\n## Practical and Philosophical Impact\n\n- **Quantum Technology:** Retrocausal effects could have applications in quantum computing and secure communications, exploiting the flexible relationship between cause and effect at the quantum level[5][6].\n- **Philosophy:** These findings force us to rethink concepts like free will, the nature of time, and the structure of reality itself[5][6].\n\n## Summary Table: Classical vs. Quantum Causality\n\n| Aspect | Classical Physics | Quantum Retrocausality |\n|-----------------------|---------------------------------|---------------------------------------|\n| Cause and Effect | Cause always precedes effect | Effect can appear to precede cause |\n| Time's Arrow | One-way (past → future) | Symmetric or bidirectional |\n| Past | Fixed and unchangeable | Can be influenced by future choices |\n| Measurement | Reveals pre-existing state | Defines state, even retroactively |\n| Communication | No faster-than-light allowed | No FTL, but nonlocal correlations |\n\n## Conclusion\n\nRetrocausality in quantum mechanics means that present actions, specifically quantum measurements, can influence the outcomes of past events—at least as revealed by statistical analysis of entangled particles or delayed-choice experiments. This does not allow us to rewrite history in the classical sense but shows that the quantum world does not always obey our everyday logic about time and causality[3][5][6].\n\nCitations:\n[1] https://plato.stanford.edu/entries/qm-retrocausality/\n[2] https://research-repository.griffith.edu.au/server/api/core/bitstreams/fe7051bd-25d6-577e-95fc-c1e28a10c40f/content\n[3] https://en.wikipedia.org/wiki/Retrocausality\n[4] https://www.spacefed.com/blog/retrocausality-and-quantum-mechanics\n[5] https://quantumzeitgeist.com/what-is-retro-causality/\n[6] https://www.youtube.com/watch?v=8s70t_irqMg\n[7] https://researchoutreach.org/articles/retrocausality-backwards-time-effects-explain-quantum-weirdness/\n[8] https://www.youtube.com/watch?v=1Y5UF6Eq06E\n\nQuantum mechanics defies classical intuition.\nA 2022 experiment confirmed retrocausality—future choices influencing the past.\nScientists used entangled photons in a delayed-choice setup.\nOne photon’s path was measured after its partner’s state was set.\nShockingly, the later measurement affected the earlier photon’s behavior.\nThis suggests time symmetry—no fixed past or future.\nThe experiment builds on John Wheeler’s 1978 delayed-choice thought experiment.\nQuantum systems remain in superposition until observed.\nObservation now can define what happened earlier.\nEntanglement links particles across time and space.\nNo faster-than-light communication occurs (causality isn’t violated).\nThe effect relies on quantum superposition and wavefunction collapse.\nResults align with the \"block universe\" theory (time as static).\nThe past isn’t fixed but shaped by future observations.\nThis challenges determinism—the idea all events are pre-set.\nPractical applications may include quantum computing and secure networks.\nCritics argue interpretations vary (e.g., many-worlds vs. Copenhagen).\nThe experiment used beam splitters and detectors to track photon states.\nStatistical analysis confirmed retrocausal influence beyond randomness.\nTime’s arrow may be more flexible in quantum realms.\nPhilosophers debate implications for free will and reality’s nature.\nFuture tests could explore larger-scale temporal entanglement.\nThe findings support time-loop theories in quantum gravity.\nReality may be a web of probabilities, not a fixed timeline.\nQuantum mechanics keeps rewriting the rules of cause and effect.\n#QuantumPhysics #TimeTravel #CauseAndEffect #QuantumWeirdness #Retrocausality ",
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"content": "The Kardashev scale is a method of measuring a civilization's level of technological advancement, based on the total energy usage of a civilization. The scale is exponential and hypothetical and regards energy consumption on a cosmic scale. It was proposed in 1964 by Nikolai Kardashev and modified in 1973 by Carl Sagan, which is the scale we use.<br />Type 0 k 0 Pre-planetary Extracts its energy, information and raw materials solely from planetary resources, and can travel beyond its home planet.<br />Type 1 K1 Planetary Can use and store the equivalent of all of the energy in and reaching its home planet, and become interplanetary.<br />Type 2 K2 Stellar Can harness the total energy equivalent of an entire star's output, and become interstellar.<br />Type 3 K3 Galactic Can control energy equivalent on the scale of an entire galaxy, and become intergalactic.<br />Type 4 K4 Universal Can control the energy equivalent of its home universe, have instantaneous travel, and manipulate the fabric of spacetime.<br />Type 5 K5 Multiversal Can escape their universe of origin and explore the multiverse, and have time travel to the future.<br />Type 6 K6 Megaversal Can exist in an infinite amount of simultaneous multiverses and instances, with unlimited spacetime travel.<br />Type 7 K7 Omniversal God-level traveler and manipulator of all universes, multiverses, and megaverses.<br /><a href=\"https://www.minds.com/search?f=top&t=all&q=spacefacts\" title=\"#spacefacts\" class=\"u-url hashtag\" target=\"_blank\">#spacefacts</a> <a href=\"https://www.minds.com/search?f=top&t=all&q=typesofcivlization\" title=\"#typesofcivlization\" class=\"u-url hashtag\" target=\"_blank\">#typesofcivlization</a> <a href=\"https://www.minds.com/search?f=top&t=all&q=KardashevS\" title=\"#KardashevS\" class=\"u-url hashtag\" target=\"_blank\">#KardashevS</a>",
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"content": "The Kardashev scale is a method of measuring a civilization's level of technological advancement, based on the total energy usage of a civilization. The scale is exponential and hypothetical and regards energy consumption on a cosmic scale. It was proposed in 1964 by Nikolai Kardashev and modified in 1973 by Carl Sagan, which is the scale we use.\nType 0 k 0 Pre-planetary Extracts its energy, information and raw materials solely from planetary resources, and can travel beyond its home planet.\nType 1 K1 Planetary Can use and store the equivalent of all of the energy in and reaching its home planet, and become interplanetary.\nType 2 K2 Stellar Can harness the total energy equivalent of an entire star's output, and become interstellar.\nType 3 K3 Galactic Can control energy equivalent on the scale of an entire galaxy, and become intergalactic.\nType 4 K4 Universal Can control the energy equivalent of its home universe, have instantaneous travel, and manipulate the fabric of spacetime.\nType 5 K5 Multiversal Can escape their universe of origin and explore the multiverse, and have time travel to the future.\nType 6 K6 Megaversal Can exist in an infinite amount of simultaneous multiverses and instances, with unlimited spacetime travel.\nType 7 K7 Omniversal God-level traveler and manipulator of all universes, multiverses, and megaverses.\n#spacefacts #typesofcivlization #KardashevS",
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"content": "Buyback plans and dividend payouts can indeed contribute to inflationary pressures within an economy. While both strategies are commonly employed by companies to distribute profits to shareholders and enhance shareholder value, their impact on inflation stems from their influence on the broader economic landscape.<br />Firstly, buyback plans involve companies repurchasing their own shares from the market, thereby reducing the number of outstanding shares. This reduction in shares outstanding often leads to an increase in earnings per share (EPS) and can result in a boost to the company's stock price. When companies engage in large-scale buybacks, they often utilize their cash reserves or take on debt to finance these purchases. This injection of liquidity into the market can increase demand for shares, driving up stock prices and potentially inflating asset values.<br />Moreover, buyback programs divert corporate resources away from other potential investments, such as research and development or capital expenditures, which could stimulate economic growth and productivity. Instead, these funds are used to prop up stock prices and reward shareholders, contributing to a misallocation of resources and potentially exacerbating inflationary pressures.<br />Similarly, dividend payouts involve companies distributing a portion of their profits to shareholders in the form of cash dividends. While dividends provide income to investors, they also represent a transfer of wealth from the company to its shareholders. When companies consistently pay out dividends, they may have less capital available for reinvestment in the business or for future growth initiatives. This can hinder the company's ability to innovate, expand operations, or invest in new technologies, which are crucial drivers of long-term economic growth.<br />Furthermore, dividend payments can contribute to inflation by increasing disposable income for shareholders. As investors receive dividend payments, they may choose to spend or invest these funds, leading to increased consumption and investment activity in the economy. This uptick in demand can put upward pressure on prices for goods and services, contributing to inflationary trends.<br />In summary, while buyback plans and dividend payouts serve to enrich shareholders and boost stock prices in the short term, they can have inflationary implications by injecting liquidity into the market, diverting resources from productive investment, and increasing disposable income for shareholders. Policymakers and regulators must carefully consider the broader economic consequences of these corporate strategies to mitigate the risk of exacerbating inflationary pressures and ensure sustainable economic growth.",
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"content": "Buyback plans and dividend payouts can indeed contribute to inflationary pressures within an economy. While both strategies are commonly employed by companies to distribute profits to shareholders and enhance shareholder value, their impact on inflation stems from their influence on the broader economic landscape.\nFirstly, buyback plans involve companies repurchasing their own shares from the market, thereby reducing the number of outstanding shares. This reduction in shares outstanding often leads to an increase in earnings per share (EPS) and can result in a boost to the company's stock price. When companies engage in large-scale buybacks, they often utilize their cash reserves or take on debt to finance these purchases. This injection of liquidity into the market can increase demand for shares, driving up stock prices and potentially inflating asset values.\nMoreover, buyback programs divert corporate resources away from other potential investments, such as research and development or capital expenditures, which could stimulate economic growth and productivity. Instead, these funds are used to prop up stock prices and reward shareholders, contributing to a misallocation of resources and potentially exacerbating inflationary pressures.\nSimilarly, dividend payouts involve companies distributing a portion of their profits to shareholders in the form of cash dividends. While dividends provide income to investors, they also represent a transfer of wealth from the company to its shareholders. When companies consistently pay out dividends, they may have less capital available for reinvestment in the business or for future growth initiatives. This can hinder the company's ability to innovate, expand operations, or invest in new technologies, which are crucial drivers of long-term economic growth.\nFurthermore, dividend payments can contribute to inflation by increasing disposable income for shareholders. As investors receive dividend payments, they may choose to spend or invest these funds, leading to increased consumption and investment activity in the economy. This uptick in demand can put upward pressure on prices for goods and services, contributing to inflationary trends.\nIn summary, while buyback plans and dividend payouts serve to enrich shareholders and boost stock prices in the short term, they can have inflationary implications by injecting liquidity into the market, diverting resources from productive investment, and increasing disposable income for shareholders. Policymakers and regulators must carefully consider the broader economic consequences of these corporate strategies to mitigate the risk of exacerbating inflationary pressures and ensure sustainable economic growth.",
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