Sara Imari Walker
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saraimari.bsky.social
Sara Imari Walker
@saraimari.bsky.social
Professor @ASU @sfiscience
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I'm so happy to share that my debut book, LIFE AS NO ONE KNOWS IT, comes out August 6th, 2024 from @riverheadbooks! Read more about it here: bit.ly/3QN0Nop
Reposted by Sara Imari Walker
"Information and the Emergence of Complexity"
I'm looking forward to an IAIS dialogue with @saraimari.bsky.social, moderated by Gordana Dodig-Crnkovic.
Wednesday, November 19th, 2025 17:30 (CET) | 11:30 AM (EST)
meet.google.com/gqm-frcd-apg...
More info: sites.google.com/view/iais-in...
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November 14, 2025 at 6:17 PM
As a species we see reality through mental models, the deepest rooted is the socially constructed one we feel like we live inside which we call our own “mind”. Seeing ourselves outside of the models we currently live inside will be one of the greatest challenges for science in the coming centuries
November 7, 2025 at 9:19 PM
If you are too confident in your representational maps of reality you will miss seeing reality
November 6, 2025 at 6:52 PM
What we communicate are models of the world, not the world.
October 31, 2025 at 4:04 PM
The platonic world does not exist “out there”, it’s a projection inside your mind when you must construct internal representations that are devoid of the history and causal contingency in the objects of your experience
October 30, 2025 at 2:50 PM
Mathematics without ontological commitment is not a theory of reality, it’s an interpretation, which is how we landed on the current landscape of descriptions in quantum mechanics, none of which are satisfactory
October 30, 2025 at 3:10 AM
Contrary to science fiction an infinite number of copies of you do not exist, you only exist here and now, and the closest things to copies of you are the other humans inhabiting this same rock at this same time.
October 16, 2025 at 3:47 PM
Asking about alien lineages of life requires deconstructing four billion years of evolution and attempting to look into a space of possibilities we’ve never seen in our entire history
October 16, 2025 at 3:36 AM
Reposted by Sara Imari Walker
“You only exist here. And you exist here because four billion years was necessary to construct you on this planet.”
- @saraimari.bsky.social
October 8, 2025 at 9:43 PM
It is an odd feature of the human mind that we use all these things that don’t exist to reason about the ones that do.
September 11, 2025 at 9:05 PM
Reposted by Sara Imari Walker
Recursive Worlds (@saraimari.bsky.social): Life reshapes how we think about reality: best understood in time, not space. Earth is a self-constructing system: ‘a very deep stack of recursive objects’ built over 4 billion years. recursiveworlds.antikythera.org
Recursive Worlds | Antikythera
recursiveworlds.antikythera.org
September 4, 2025 at 6:30 PM
Reposted by Sara Imari Walker
Unfold the history of proteins and you find rich, unexplained complexity. This August, an SFI working group with @ELSI_origins and @ASU_SCAS used machine learning and assembly theory to explore hidden rules underlying all folded matter, from proteins to potential new drugs.

santafe.edu/news
August 20, 2025 at 5:17 PM
We should always take seriously where computational descriptions fail, as it tells us something about where the current boundaries of what we can describe in language lie
August 18, 2025 at 10:47 PM
Of all the materials that compose you, the most significant is time. It takes billions of years for our universe to generate structures like us.
August 14, 2025 at 9:25 PM
Reposted by Sara Imari Walker
Collaborate with researchers globally. Chart your transdisciplinary path. Apply to SFI's 2026 Complexity Postdoctoral Fellowships. Competitive pay, research funds, and generous benefits to become a leader in transdisciplinary research.

Deadline: Oct 1, 2025
Apply: santafe.edu/sfifellowship
August 11, 2025 at 6:03 PM
Known examples of life persist across scales from the molecular to the planetary. Death also is a matter of scale, raising the question of which of our deaths matters most? The individual? The lineage? The biosphere/planetary? Or the universe?
August 13, 2025 at 5:27 PM
Myths are very much alive in modern societies, and apart from in few cultural practices, like science, we have just as hard of a time recognizing when we are steeped in them as our ancestors did.
August 13, 2025 at 1:29 AM
Reposted by Sara Imari Walker
Toward Planetary Maturity: The RAND Corporation's new proposal for astrographic standardization will help to provide a standard grammar for #PlanetarySapience, thus helping to "mature the technosphere," as per @saraimari.bsky.social. My latest substack: nilsgilman.substack.com/p/toward-pla...
Toward Planetary Maturity
The RAND Corporation's new proposal for astrographic standardization will help to provide a standard grammar for planetary sapience, thus helping mature the technosphere
nilsgilman.substack.com
August 11, 2025 at 3:55 PM
Reposted by Sara Imari Walker
Finally, in the second Seeds of Story post, @saraimari.bsky.social's Life as No One Knows It offers cool new physics and a metric for whether that thing out there is aliens: reactormag.com/the-wild-ali...
Finite Monkeys, Finite Keyboards: The Wild Alien Possibilities of Sara Imari Walker’s Life as No One Knows It - Reactor
Radically rethinking the origins of life on Earth and throughout the universe...
reactormag.com
August 5, 2025 at 11:54 AM
Life as No One Knows It, my conversation with Sophia Al Maria during the inaugural AIR festival (also named Life As No One Knows It!!) now on Aspen Public radio, an incredible week celebrating art, artists, creativity and ideas with so many amazing humans ❤️ www.aspenpublicradio.org/ideas-speake...
Aspen Art Museum: Life As No One Knows It - Sara Imari Walker and Sophia Al-Maria
Physicist and astrobiologist Sara Imari Walker and artist Sophia Al-Maria explore life on other worlds. Departing from Walker’s radical rethinking of the origins and definitions of life in her 2024 bo...
www.aspenpublicradio.org
August 12, 2025 at 10:15 PM
“Human” is the most amazing configuration of matter any of us has ever observed, yet we deeply under appreciate what we are
August 1, 2025 at 3:31 AM
What is the human aesthetic choice behind Google's algorithm ‘People also ask' - it seems like it prioritizes content scaling over relevance and/or depth. The answers are depressing and boring. Would love it to add value to my original search.Why is understanding NOT the aesthetic we are going for?
July 31, 2025 at 5:43 AM
Physics for a new century should solve what we, and all life, share fundamentally youtube.com/watch?v=43Re...
2025 Interdisciplinary Science Summit Showcase Talk: Sara Walker
YouTube video by Schmidt Science Fellows
youtube.com
July 30, 2025 at 6:34 PM
Reposted by Sara Imari Walker
@r-emrys.bsky.social explores the work of physicist and astrobiologist Sara Imari Walker, and how her insights into Assembly Theory and the origins of life might influence the future of science and science fiction 🌱

reactormag.com/the-wild-ali...
Finite Monkeys, Finite Keyboards: The Wild Alien Possibilities of Sara Imari Walker’s Life as No One Knows It - Reactor
Radically rethinking the origins of life on Earth and throughout the universe...
reactormag.com
July 29, 2025 at 6:00 PM
Many cannot see past the current representational maps that architect our minds & want them to remain static, but it’s important to recognize these can always be revised - the models we inhabit in our own minds should always be changing if we are to really come to understand anything about our world
June 4, 2025 at 4:58 PM