Research the Present

Research Questions

What is the current state of cryonics technology and its ability to preserve human brains or bodies in a way that could potentially allow for future revival with memory and identity intact?
What are the latest scientific advancements or breakthroughs in the field of cryonics that could impact the possibility of reviving a cryopreserved human by 2300?
What advancements have been made in cryonics technology and protocols since the reported revival of a human brain by Chinese researchers?
What are the current challenges and limitations in cryonics that prevent the successful revival of a fully cryopreserved human?
What are the current 'best practice' cryonics protocols and how do they aim to preserve memory and personal identity during cryopreservation?
What advancements or breakthroughs in cryonics technology and revival techniques are expected or necessary to achieve successful revival by 2300?

Chosen Sources

WebsiteDescriptionActions
sciencemag.orgThe website of the American Association for the Advancement of Science, featuring research articles and news in various scientific fields.
mit.eduThe official website of the Massachusetts Institute of Technology (MIT).
nih.govThe official website of the National Institutes of Health (NIH) in the United States.
newscientist.comA popular science and technology news website that covers a wide range of topics, including health, environment, and space.
wikipedia.orgA free online encyclopedia that allows users to collaboratively edit and contribute content across a wide range of topics.
technologyreview.comA leading technology publication that provides insights and analysis on emerging technologies and their impact on society.
scientificamerican.comA popular science magazine that covers a wide range of scientific topics and research developments.
theconversation.comA platform for academic experts to share insights and analysis on current events and issues.
wired.comA technology and culture magazine that covers the intersection of technology, science, and society.
WebsiteDescriptionActions
alcor.orgThe website of the Alcor Life Extension Foundation, which focuses on cryonics and life extension technologies.
cryonics.orgThe website dedicated to providing information and resources about cryonics and its related technologies.
futureoflife.orgThe Future of Life Institute focuses on mitigating existential risks from advanced technologies and promoting beneficial uses of AI and other innovations.
lifeboat.comA platform for discussions on science, technology, and the future of humanity.
kurzweilai.netA platform dedicated to exploring and discussing advancements in technology, science, and futurism.
WebsiteDescriptionActions
pubmed.ncbi.nlm.nih.govA database of biomedical literature and research articles maintained by the National Institutes of Health.
nature.comThe online platform for the scientific journal Nature, featuring research articles, news, and commentary in various fields of science.
sciencedirect.comA leading online platform providing access to a vast collection of scientific and technical research articles across various disciplines.
springer.comThe online platform for Springer, a leading global publisher of scientific and academic research.
jstor.orgA digital library providing access to thousands of academic journals, books, and primary sources across various disciplines.

Articles Read


Facts

SourceDescriptionDateActions
worldhealth.netThe field lacks peer-reviewed studies demonstrating the successful revival of complex organisms after long-term cryopreservation.Sep 11, 2024
business-standard.comCurrent medical science lacks the technology to reverse the process or repair the cellular damage that may occur.Jul 12, 2024
business-standard.comHowever, proponents of cryonics are optimistic that future breakthroughs in nanotechnology and regenerative medicine could make revival possible.Jul 12, 2024
theconversation.comScientists are quick to point out the chances of a successful reanimation are slim.Jun 3, 2024
technologyreview.comSo starting several years ago, McIntyre, then working with cryobiologist Greg Fahy at a company named 21st Century Medicine, developed a different method, which combines embalming with cryonics.Mar 13, 2018
technologyreview.comIt proved effective at preserving an entire brain to the nanometer level, including the connectome—the web of synapses that connect neurons.Mar 13, 2018
technologyreview.comA connectome map could be the basis for re-creating a particular person’s consciousness, believes Ken Hayworth, a neuroscientist who is president of the Brain Preservation Foundation.Mar 13, 2018
wired.comNo human, to be clear, has ever been revived from a state of cryonic freezing.Aug 28, 2014
alcor.orgCryonic suspension is the preservation, at extremely low temperatures, of a deceased person in the expectation that future scientific advances will eventually allow the repair of the conditions that caused death, as well as damage incurred in the preservation process, and thus permit the person to be restored to life.Jan 1, 1970
alcor.orgThe purpose of a human cryopreservation protocol is to preserve the brain in the best condition possible at cryogenic temperatures after medico-legal death is pronounced, in anticipation of subsequent future resuscitation.Jan 1, 1970
alcor.orgTo this end, immediately after legal pronouncement of death, manual and mechanical cardiopulmonary support (CPS) is started to supply oxygen and nutrients to the cells, circulate stabilization medications, and to achieve circulation enhanced cooling of the patient to reduce metabolic rate.Jan 1, 1970
alcor.orgAfter cephalic isolation the patient’s head is washed out and perfused with a chilled vitrification agent to prevent ice formation during cooldown to cryogenic temperatures.Jan 1, 1970

Key Findings

Current Technological Limitations


Current medical science does not have the capability to reverse cryopreservation or repair cellular damage, and there are no peer-reviewed studies demonstrating successful revival of complex organisms after long-term cryopreservation. No human has ever been revived from cryonic freezing. Cryonics involves preserving a deceased person at very low temperatures, with the hope that future scientific advancements will enable repair of the conditions that caused death and the preservation process, allowing for restoration to life. Cryopreservation protocols focus on preserving the brain in the best possible condition at cryogenic temperatures, with immediate post-mortem interventions to minimize damage and prevent ice formation.
Source Facts
  • The field lacks peer-reviewed studies demonstrating the successful revival of complex organisms after long-term cryopreservation.worldhealth.net | Sep 11, 2024
  • Current medical science lacks the technology to reverse the process or repair the cellular damage that may occur.www.business-standard.com | Jul 12, 2024
  • No human, to be clear, has ever been revived from a state of cryonic freezing.www.wired.com | Aug 28, 2014
  • Cryonic suspension is the preservation, at extremely low temperatures, of a deceased person in the expectation that future scientific advances will eventually allow the repair of the conditions that caused death, as well as damage incurred in the preservation process, and thus permit the person to be restored to life.www.alcor.org | Jan 1, 1970
  • The purpose of a human cryopreservation protocol is to preserve the brain in the best condition possible at cryogenic temperatures after medico-legal death is pronounced, in anticipation of subsequent future resuscitation.www.alcor.org | Jan 1, 1970
  • To this end, immediately after legal pronouncement of death, manual and mechanical cardiopulmonary support (CPS) is started to supply oxygen and nutrients to the cells, circulate stabilization medications, and to achieve circulation enhanced cooling of the patient to reduce metabolic rate.www.alcor.org | Jan 1, 1970
  • After cephalic isolation the patient’s head is washed out and perfused with a chilled vitrification agent to prevent ice formation during cooldown to cryogenic temperatures.www.alcor.org | Jan 1, 1970
  • Cryonics Methodology


    A cryopreservation method developed by McIntyre and Fahy, involving a combination of embalming and cryonics, has demonstrated the ability to preserve an entire brain at the nanometer level, including the connectome. Current human cryopreservation protocols aim to preserve the brain in optimal condition at cryogenic temperatures post-legal death for potential future resuscitation. These protocols include the initiation of cardiopulmonary support to maintain cell viability and the use of a vitrification agent to prevent ice formation during cooling.
    Source Facts
  • So starting several years ago, McIntyre, then working with cryobiologist Greg Fahy at a company named 21st Century Medicine, developed a different method, which combines embalming with cryonics.www.technologyreview.com | Mar 13, 2018
  • It proved effective at preserving an entire brain to the nanometer level, including the connectome—the web of synapses that connect neurons.www.technologyreview.com | Mar 13, 2018
  • The purpose of a human cryopreservation protocol is to preserve the brain in the best condition possible at cryogenic temperatures after medico-legal death is pronounced, in anticipation of subsequent future resuscitation.www.alcor.org | Jan 1, 1970
  • To this end, immediately after legal pronouncement of death, manual and mechanical cardiopulmonary support (CPS) is started to supply oxygen and nutrients to the cells, circulate stabilization medications, and to achieve circulation enhanced cooling of the patient to reduce metabolic rate.www.alcor.org | Jan 1, 1970
  • After cephalic isolation the patient’s head is washed out and perfused with a chilled vitrification agent to prevent ice formation during cooldown to cryogenic temperatures.www.alcor.org | Jan 1, 1970
  • Scientific Skepticism


    Scientific skepticism is prevalent regarding the likelihood of successful reanimation from cryopreservation. The absence of peer-reviewed studies demonstrating the revival of complex organisms after long-term cryopreservation, coupled with the fact that no human has ever been revived from cryonic freezing, underscores the significant scientific and technical challenges that must be overcome for cryonics to achieve the level of reanimation described in the forecasting question.
    Source Facts
  • The field lacks peer-reviewed studies demonstrating the successful revival of complex organisms after long-term cryopreservation.worldhealth.net | Sep 11, 2024
  • Scientists are quick to point out the chances of a successful reanimation are slim.theconversation.com | Jun 3, 2024
  • No human, to be clear, has ever been revived from a state of cryonic freezing.www.wired.com | Aug 28, 2014
  • Connectome and Consciousness

    Source Facts
  • It proved effective at preserving an entire brain to the nanometer level, including the connectome—the web of synapses that connect neurons.www.technologyreview.com | Mar 13, 2018
  • A connectome map could be the basis for re-creating a particular person’s consciousness, believes Ken Hayworth, a neuroscientist who is president of the Brain Preservation Foundation.www.technologyreview.com | Mar 13, 2018
  • Other Key Statements

    Source Facts
  • However, proponents of cryonics are optimistic that future breakthroughs in nanotechnology and regenerative medicine could make revival possible.www.business-standard.com | Jul 12, 2024
  • Analogize the Past

    Historical Findings

    Historical background


    Recent advancements in cryopreservation have demonstrated the ability to freeze and revive human brain tissue without damage, maintaining its structure and function for weeks post-thaw, suggesting potential for whole-brain preservation. Despite over 100 individuals already undergoing cryopreservation, techniques are not yet perfected, but research has shown that synaptic structures crucial for memory can be preserved indefinitely. Current methods involve using glutaraldehyde to halt decay and cryoprotectants to prevent dehydration, cooling the brain to a glass-like state at -135 °C for long-term storage.
    Source Facts
  • A new technique has allowed scientists to freeze human brain tissue so that it regains normal function after thawing, potentially opening the door to improved ways of studying neurological conditions.www.newscientist.com | May 15, 2024
  • The tissue maintained its pre-freezing structure and continued to remain active in a laboratory culture for at least two weeks after thawing.www.newscientist.com | May 15, 2024
  • With significantly more research and the use of larger tissues, the work could one day lead to freezing entire brains, says Magalhães.www.newscientist.com | May 15, 2024
  • A new technique has allowed scientists to freeze human brain tissue so that it regains normal function after thawing, potentially opening the door to improved ways of studying neurological conditions.www.newscientist.com | May 15, 2024
  • Although cryopreservation techniques have not yet been perfected, more than 100 people worldwide have already been cryogenically frozen after death by companies like Alcor.www.newscientist.com | Feb 11, 2016
  • Hayworth says the research completely refutes past suggestions that cryonics won’t work because it’s impossible to preserve the synapses between neurons that store memories.www.newscientist.com | Feb 11, 2016
  • The point was to demonstrate that the structure of the delicate synaptic circuitry of the brain could be preserved over indefinite time spans.www.newscientist.com | Feb 11, 2016
  • By draining the blood immediately and replacing it with a chemical fixative called glutaraldehyde, they can instantly stop decay, allowing them to add cryoprotectants more slowly to prevent dehydration.www.newscientist.com | Feb 11, 2016
  • The brain is then cooled to -135 °C, which turns it into a glass-like state that can be stored for centuries without decay.www.newscientist.com | Feb 11, 2016
  • Historical Frequencies

    Theoretical medical procedures performed on humans within 275 years
    Guess: 70%
    Out of all medical procedures that were declared theoretically possible by mainstream scientists but had never been successfully performed on humans in a given year, how often was the procedure successfully performed on a human within 275 years of that year?

    Historical Averages

    Time until impossible procedure became recognized treatment.
    Median: 30 years (guess)

    Probability ≤ 275 years: 10% (guess)
      In cases where a medical procedure was considered scientifically impossible by mainstream medicine in a given year, on average how long does it take for the procedure to become a recognized medical treatment?
      Time until successful revival of preserved tissue/organisms.
      Median: 50 years (guess)

      Probability ≤ 275 years: 65% (guess)
        In cases where a preservation method for biological tissue or organisms is considered technically impossible, on average how long does it take from the year of preservation until the first successful revival with preserved biological function?
        Time until procedure performed on humans.
        Median: 20 years (guess)

        Probability ≤ 275 years: 75% (guess)
          In cases where a medical procedure is declared theoretically possible by mainstream scientists but has never been successfully performed on humans, on average how long does it take until the procedure is first successfully performed on a human?
          Time until successful revival of preserved biological structures.
          Median: 125 years (guess)

          Probability ≤ 275 years: 20% (guess)
            When preservation techniques developed to maintain complex biological structures at extremely low temperatures are used, on average how long does it take from the year of preservation until successful revival with maintained functionality?

            Simulate the Future

            Weight Forecasts

            Weighting reasoning: This model is incoherent for the same reason as model 1 - cryonic revival is not currently declared theoretically possible by mainstream scientists, and the reference class is too broad as it includes much simpler medical procedures.
            Weighting reasoning: This model is incoherent for this question because cryonic revival is not currently declared theoretically possible by mainstream scientists - in fact, there is significant scientific skepticism about its feasibility.
            Weighting reasoning: This model is coherent and somewhat informative as it looks at historical timelines for revival of preserved biological material, but the reference class is too broad as it includes simpler preservation methods and organisms. The lack of specific data points reduces reliability.
            Historical forecast: N/A
            FUTURESEARCH Forecast

            12% probability
            Extremely unlikely
            I began with a historical forecast of 26%, and then made two revisions: first down to 15% based on present-day considerations, and second slightly down to 12% based on the plausible scenarios of how this will unfold. The first revision, from 26% to 15%, reflects the current technological limitations, such as the inability to reverse cryopreservation or repair cellular damage, and the absence of successful revival cases. Despite advancements in preservation techniques, skepticism from the scientific community and the lack of peer-reviewed evidence of successful revival of complex organisms after long-term cryopreservation suggest significant challenges remain. Tim Urban's arguments in his post on cryonics suggest optimism for future breakthroughs in nanotechnology and regenerative medicine, but these are speculative and not guaranteed. The second revision, from 15% to 12%, considers the timeline extending to 2300, which allows for technological advancement, but also highlights the complexity of preserving and restoring neural connections, the need for multiple breakthrough technologies, and the requirement for perfect preservation of memories and identity. The specific requirement for 'best practice' protocols from 2025 and recognition by 'mainstream medical standards' further complicate the scenario, warranting a small downward adjustment.
            YES scenario

            Dr. Robert McIntyre, building on his 2015 breakthrough in brain preservation, collaborates with Dr. Gregory Fahy to refine cryopreservation techniques. By 2030, they achieve a significant milestone, demonstrating the preservation of a mammalian brain with intact connectomes, sparking renewed interest in cryonics research.

            In 2075, Dr. Emily Zhang, inspired by the success of the Human Genome Project, leads a global consortium to develop advanced nanotechnology capable of repairing cellular damage at the molecular level. Her team successfully revives a cryopreserved mammalian brain, retaining its memories and identity, a feat that garners widespread attention and funding.

            By 2150, Dr. Aisha Patel, leveraging the advancements in AI and quantum computing, develops a sophisticated system to simulate and repair complex neural networks. Her work culminates in the revival of a cryopreserved human brain, meeting all criteria for mainstream medical recognition.

            NO scenario

            In 2025, Dr. Robert McIntyre and his team at the cryonics facility implement their advanced cryopreservation protocol, inspired by their successful preservation of a rabbit brain in 2016. They meticulously apply vitrification techniques to prevent ice formation, aiming to preserve the brain's connectome at a nanometer level. Despite their efforts, the scientific community remains skeptical, as no peer-reviewed studies have demonstrated successful revival of complex organisms after long-term cryopreservation.

            By 2100, Dr. Emily Chen, a leading neuroscientist, attempts to address the cellular damage caused by cryopreservation. Drawing from her work on neural tissue regeneration in the 2080s, she develops a method to repair some cellular structures. However, the complexity of restoring the brain's intricate connections proves insurmountable, as the technology to fully reconstruct the connectome and revive memories remains elusive.

            In 2299, Professor Liam Patel, a renowned expert in cryobiology, reviews the progress made over the centuries. Despite advancements in medical science, the revival of cryopreserved humans with intact memories and identity remains beyond reach. As the year draws to a close, the scientific consensus acknowledges the persistent challenges, and the question of successful reanimation remains unanswered.