Search FQXi


If you are aware of an interesting new academic paper (that has been published in a peer-reviewed journal or has appeared on the arXiv), a conference talk (at an official professional scientific meeting), an external blog post (by a professional scientist) or a news item (in the mainstream news media), which you think might make an interesting topic for an FQXi blog post, then please contact us at forums@fqxi.org with a link to the original source and a sentence about why you think that the work is worthy of discussion. Please note that we receive many such suggestions and while we endeavour to respond to them, we may not be able to reply to all suggestions.

Please also note that we do not accept unsolicited posts and we cannot review, or open new threads for, unsolicited articles or papers. Requests to review or post such materials will not be answered. If you have your own novel physics theory or model, which you would like to post for further discussion among then FQXi community, then please add them directly to the "Alternative Models of Reality" thread, or to the "Alternative Models of Cosmology" thread. Thank you.

Forum Home
Introduction
Terms of Use

Order posts by:
 chronological order
 most recent first

Posts by the blogger are highlighted in orange; posts by FQXi Members are highlighted in blue.

By using the FQXi Forum, you acknowledge reading and agree to abide by the Terms of Use

 RSS feed | RSS help
RECENT POSTS IN THIS TOPIC

Johannes Kleiner: on 7/2/20 at 5:39am UTC, wrote Abstract of this talk: This presentation offers a heuristic proof (and...


RECENT FORUM POSTS

Stefan Weckbach: "Hi Lorraine, in the case of the crashing twin-towers, the term “top-down..." in The Present State of...

Stefan Weckbach: "Hi Steve, take also care Steve, and may the force of the three spheres be..." in The Present State of...

Jim Snowdon: "Since evolving on our rapidly rotating planet, we have used it`s rotational..." in The Quantum Clock-Maker...

Steve Dufourny: "a general universal clock of evolution irreversible correlated for me with..." in The Quantum Clock-Maker...

Georgina Woodward: "If considering existence rather than appearances, the time dimension..." in Anatomy of spacetime and...

Georgina Woodward: "That is about the 'anatomy"" of spacetime." in Anatomy of spacetime and...

Georgina Woodward: "Thank you. Good luck." in The Nature of Time

Lorraine Ford: "Rob, As you have not replied, I take it that you now concede that the..." in 16th Marcel Grossmann...


RECENT ARTICLES
click titles to read articles

The Quantum Clock-Maker Investigating COVID-19, Causality, and the Trouble with AI
Sally Shrapnel, a quantum physicist and medical practitioner, on her experiments into cause-and-effect that could help us understand time’s arrow—and build better healthcare algorithms.

Connect the Quantum Dots for a New Kind of Fuel
'Artificial atoms' allow physicists to manipulate individual electrons—and could help to reduce energy wastage in electronic devices.

Can Choices Curve Spacetime?
Two teams are developing ways to detect quantum-gravitational effects in the lab.

The Quantum Engine That Simultaneously Heats and Cools
Tiny device could help boost quantum electronics.

The Quantum Refrigerator
A tiny cooling device could help rewrite the thermodynamic rule book for quantum machines.


FQXi BLOGS
September 17, 2021

CATEGORY: Blog [back]
TOPIC: Markov blankets and Bayesian mechanics by Karl Friston [refresh]
Bookmark and Share
Login or create account to post reply or comment.

Blogger Johannes Kleiner wrote on Jul. 2, 2020 @ 05:39 GMT
Abstract of this talk: This presentation offers a heuristic proof (and simulations of a primordial soup) suggesting that life—or biological self-organization—is an inevitable and emergent property of any (weakly mixing) random dynamical system that possesses a Markov blanket. This conclusion is based on the following arguments: if a system can be differentiated from its external milieu, heat bath or environment, then the system’s internal and external states must be conditionally independent. These independences induce a Markov blanket that separates internal and external states. This separation means that internal states will appear to minimize a free energy functional of blanket states – via a variational principle of stationary action. Crucially, this equips internal states with an information geometry, pertaining to probabilistic beliefs about something; namely external states. Interestingly, this free energy is the same quantity that is optimized in Bayesian inference and machine learning (where it is known as an evidence lower bound). In short, internal states (and their Markov blanket) will appear to model—and act on—their world to preserve their functional and structural integrity. This leads to a Bayesian mechanics, which can be neatly summarised as self-evidencing.



Keywords: Mathematical Consciousness Science Online Seminar Series

Bookmark and Share
this post has been edited by the author since its original submission

report post as inappropriate

This forum thread is open to the public.


Login or create account to post reply or comment.

Please enter your e-mail address:
Note: Joining the FQXi mailing list does not give you a login account or constitute membership in the organization.