Category: Physics

Causally Emergent vs. Divine Spark Murder Otherwises

Mark DavisLeave a comment

One might claim that a metaphysical commitment to strong determinism is only porous to quantum indeterminacy or atomic indeterminacy (decay behavior for instance). Those two can be lumped together and simply called subatomic indeterminacy or something. Everything else is conceptually derivative of state evolution and therefore deterministic. So does that mean that my model for R fails unless I can invoke these two candidates? My suggestion of amplifying thermodynamic noise doesn’t really cut the mustard (an amusing semantic drift from pass muster, perhaps) because it only appears random and solely characterizable by these macroscopic variables like pressure and temperature, not because it actually is random in the molecule swirl.

But I can substitute an atomic decay counter for my thermodynamic amplifier, or use a quantum random number generator based on laser measurements of vacuum fluctuations. There, I’ve righted the ship, though I’ve jettisoned my previous claim that randomness is not necessary for R’s otherwises. Now it is, but it is not sufficient because of the need for a device like the generative subsystem that uses randomness in a non-arbitrary way to revise decisions. We do encounter a difficulty in porting subatomic indeterminacy into a human analog, of course, though some have given it a try.

But there is some new mathematics for causal emergence that fits well with my model. In causal emergence, ideas like necessity and sufficiency for causal explanations can be shown to have properties in macroscale explanations that are not present at microscales. The model used is a simple Markov chain that flips between two states and information theory is applied to examine a range of conceptual structures for causation running from David Hume’s train of repeating objects (when one damn thing comes after another and then again and again, we may have a cause), up through David Lewis’s notion of counterfactuals in alternative probabilistic universes (could it have happened that way in all possible worlds?),… Read the rest

Indeterminacy and the Ethics of Emergence

Mark DavisLeave a comment

Continuing on with this theme of an ethics of emergence, can we formulate something interesting that does better than just assert that freedom and coordination are inherent virtues in this new scheme? And what does that mean anyway in the dirty details? We certainly see natural, emergent systems that exhibit tight regulatory control where stability, equilibrium, and homeostasis prevent dissipation, like those hoped-for fascist organismic states. There is not much free about these lower level systems, but we think that though they are necessary they are insufficient for the higher-order challenges of a statistically uncertain world. And that uncertainty is what drives the emergence of control systems in the first place. The control breaks out at some level, though, in a kind of teleomatic inspiration, and applies stochastic exploration of the adaptive landscape. Freedom then arises as an additional control level, emergent itself.

We also have this lurking possibility that emergent systems may not be explainable in the same manner that we have come to expect scientific theories to work. Being highly contingent they can only be explained in specificity about their contingent emergence, not by these elegant little explanatory theories that we have now in fields like physics. Stephen Wolfram, and the Santa Fe Institute folks as well, investigated this idea but it has remained inconclusive in its predictive power so far, though that may be changing.

There is an interesting alternative application for deep learning models and, more generally, the application of enormous simulation systems: when emergent complexity is daunting, use simulation to uncover the spectrum of relationships that govern complex system behavior.

Can we apply that to this ethics or virtue system and gain insights from it?… Read the rest

Be Persistent and Evolve

Mark DavisLeave a comment

If we think about the evolution of living things we generally start from the idea that evolution requires replicators, variation, and selection. But what if we loosened that up to the more everyday semantics of the word “evolution” when we talk about the evolution of galaxies or of societies or of crystals? Each changes, grows, contracts, and has some kind of persistence that is mediated by a range of internal and external forces. For crystals, the availability of heat and access to the necessary chemicals is key. For galaxies, elements and gravity and nuclear forces are paramount. In societies, technological invention and social revolution overlay the human replicators and their biological evolution. Should we make a leap and just declare that there is some kind of impetus or law to the universe such that when there are composable subsystems and composition constraints, there will be an exploration of the allowed state space for composition? Does this add to our understanding of the universe?

Wong, et. al. say exactly that in “On the roles of function and selection in evolving systems” in PNAS. The paper reminds me of the various efforts to explain genetic information growth given raw conceptions of entropy and, indeed, some of those papers appear in the cites. It was once considered an intriguing problem how organisms become increasingly complex in the face of, well, the grinding dissolution of entropy. It wasn’t really that hard for most scientists: Earth receives an enormous load of solar energy that supports the push of informational systems towards negentropy. But, to the earlier point about composability and constraints, the energy is in a proportion that supports the persistence of systems that are complex.… Read the rest

Contrasts and Failures, Hope and Awe

Mark Davis2 Comments

Russell Moore writes in the Atlantic that American evangelicalism is in crisis. There is a Faustian pact of unholy MAGA politics, conspiracy theories, and religious feelings that can only be remedied with a revival of the faith itself, laser-focused on Moore’s conceptions of what Christianity should strive to become. He acknowledges that there is a dark history to America’s evangelical movement through the 20th century. It was always political in close focus, with the maintenance of racism and exclusion at its core well before abortion was even a talking point. Anti-Catholicism and antisemitism were equally bundled up with the evangelical mindset. Beyond the moral failings that sloshed into politics, there was the structural marketing of the faith by televangelists and traveling ministries that turned the hoped-for internal conversion into a more cynical plot:

In the end, a market-driven religion gives rise to a market-driven approach to truth, and this development ultimately eviscerated conservative Christianity in the US and left it the possession of hypocrites and hucksters.

I’m not at all surprised. As information has become unlocked from the vaults of academic pursuits by modern technologies, the ripples of uncertainty about faith claims have spread and clashed with the desire to totalize the political, personal, pragmatic, and moral dimensions of evangelical beliefs. If a thing is so unquestionably right and good, it must infiltrate and own the mind, the body, the soul, the community, and the nation. So why is the world drifting away, seemingly inexorably?

But even those who leave their faith communities feel adrift, clinging to vague spirituality or buffet gorging across traditions in search of something that is satisfactory but different. But that is only in the best of moments, when a song triggers nostalgia or late after eggnog on Christmas Eve.… Read the rest

Oh, the Humanities!

Mark Davis1 Comment

I often laugh out loud at Ross Douthat’s New York Times columns that worry over strange spiritualisms taking over America, or try to unravel cultural knots that he always suggests might best be resolved by Catholicism (or even one of those lesser faiths), but I did enjoy his take today on the perishing of the humanities in America’s universities and colleges. I routinely read into the 18th and 19th centuries as an exploration of how language was once used. I read analytically, that is. Plots are picked apart. Characterization is considered. Clausal embedding is almost always more ornate than contemporary writing where such elaborations are pretentious or, at least, overwrought. I also (try to) read original versions of Balzac or Flaubert as an exercise in improving my French. What is less interesting to me are the class conflicts, racism, and gender roles from those bygone days. People are rotten enough today; I hardly need a reminder that we were always rotten and had reinforcing institutions and traditions overlaying that malaise.

But is there a threat to a decline in the participation in the humanities and a shift to STEM fields among university students? The argument is that it impacts our understanding of history and the drivers that got us here today. Perhaps it also diminishes our knowledge of logic and reason when philosophy is subtracted from the curriculum. Or just that the student never learns to articulate complex ideas and arguments.

An alternative to Douthat’s calls for monastic recitation and memorization as a grounding for the transmission of ideas is to make it more relevant to the STEM fields that have money and mindshare. In other words, inveigle the humanities into STEM; don’t fight, infiltrate.… Read the rest

Entanglements: Collected Short Works

Mark DavisLeave a comment

Now available in Kindle, softcover, and hardcover versions, Entanglements assembles a decade of short works by author, scientist, entrepreneur, and inventor Mark William Davis.

The fiction includes an intimate experimental triptych on the evolution of sexual identities. A genre-defying poetic meditation on creativity and environmental holocaust competes with conventional science fiction about quantum consciousness and virtual worlds. A postmodern interrogation of the intersection of storytelling and film rounds out the collected works as a counterpoint to an introductory dive into the ethics of altruism.

The nonfiction is divided into topics ranging from literary theory to philosophical concerns of religion, science, and artificial intelligence. Legal theories are magnified to examine the meaning of liberty and autonomy. A qualitative mathematics of free will is developed over the course of two essays and contextualized as part of the algorithm of evolution. What meaning really amounts to is always a central concern, whether discussing politics, culture, or ideas.

The works show the author’s own evolution in his thinking of our entanglement with reality as driven by underlying metaphors that transect science, reason, and society. For Davis, metaphors and the constellations of words that help frame them are the raw materials of thought, and their evolution and refinement is the central narrative of our growth as individuals in a webwork of societies and systems.

Entanglements is for readers who are in love with ideas and the networks of language that support and enervate them. It is a metalinguistic swim along a polychromatic reef of thought where fiction and nonfictional analysis coexist like coral and fish in a greater ecosystem.

Mark William Davis is the author of three dozen scientific papers and patents in cognitive science, search, machine translation, and even the structure of art.… Read the rest

Sentience is Physical

Mark DavisLeave a comment

Sentience is all the rage these days. With large language models (LLMs) based on deep learning neural networks, question-answering behavior of these systems takes on curious approximations to talking with a smart person. Recently a member of Google’s AI team was fired after declaring one of their systems sentient. His offense? Violating public disclosure rules. I and many others who have a firm understanding of how these systems work—by predicting next words from previous productions crossed with the question token stream—are quick to dismiss the claims of sentience. But what does sentience really amount to and how can we determine if a machine becomes sentient?

Note that there are those who differentiate sentience (able to have feelings), from sapience (able to have thoughts), and consciousness (some private, subjective phenomenal sense of self). I am willing to blend them together a bit since the topic here isn’t narrowly trying to address the ethics of animal treatment, for example, where the distinction can be useful.

First we have the “imitation game” Turing test-style approach to the question of how we might ever determine if a machine becomes sentient. If a remote machine can fool a human into believing it is a person, it must be as intelligent as a person and therefore sentient like we presume of people. But this is a limited goal line. If the interaction is only over a limited domain like solving your cable internet installation problems, we don’t think of that as a sentient machine. Even against a larger domain of open-ended question and answering, if the human doesn’t hit upon a revealing kind of error that a machine might make that a human would not, we remain unconvinced that the target is sentient.… Read the rest

Kalam the Incorrigible as a Moral Good

Mark DavisLeave a comment

I’ve previously complained that the Kalam Cosmological Argument is drivel, but a recent video reminded me that intellectual sophistication can arise from confronting drivel, because it helps expose more people to the tenuous, changing, and incomplete journey of modern science and philosophical interpretation/translation. I knew I was largely in alignment with modern science when I wrote that particular post (and others), but the video, considering the figures involved, provides additional compelling insights to push the viewer into thinking more carefully about the challenges and limits of our collective understanding of who we are, where we came from, and what it means to be here now.

I highly recommend it:

And what I think is most worth emphasizing and that may not be understood by laypeople and religious supplicants, or may not be internalized as deeply as it should be, includes:

  1. Our everyday experience and intuitions about similarly-sized matter are simply not applicable to quantum and relativistic scales, or to the implications of cosmological theories. “Causality” is one of those concepts. We see this in everything from the simple case of radioactive decay to contra-causal quantum experiments, and ultimately in the question of causation as applied to the universe itself.
  2. Science operates by applying metaphors, finding the limitations of those metaphors, filtering by empirical results, and then using the refined science as a new metaphor. Most of those metaphors are incompatible with everyday experience. If they weren’t they wouldn’t be so vexingly difficult to understand.
  3. Many philosophical worries about logical inconsistency are abstractly derived from everyday reasoning and may not apply to modern understandings of causality, space, and time.
  4. Humility about what we don’t know and effort to unravel it remains the best approach to our mysterious selves and the world.
… Read the rest

Time at Work

Mark DavisLeave a comment

Time is a strange concept according to several strains of science and related philosophical concerns. We have this everyday medium-macroscopic set of ideas about how there is an undiscovered country of the future, a now we are experiencing, and a past that we remember or model based on accumulated historical facts. When we venture into extensions of conceptual ideas like an infinite past or sequenced events we deploy reasoning about what their properties might be by excluding contradictory compositions of properties and using other kinds of limiting semantics to constrain a mental model of those concepts.

But that isn’t the weirder stuff. The weirder stuff is the result of a collision of measurement and scientific theory.

Take, for instance, the oft-described reversibility of Newtonian physics. We have an equation for an object’s motion that can be run backward in time. But entropy in large ensembles of things in motion is not reversible because of some odd property of energy dissipation into the environment that arises because of micro-interactions. Some say this creates an “arrow of time” in the face of these reversible equations.

But this is an odd way of characterizing mathematical statements that represent the uniformity of physical interactions. The idea of “reversibility” is just a matter of a computational representation of processes that do always flow forward in time. Running t from 0 to -∞ in an equation has no real relationship to any physical phenomena. So the reversibility of mathematical forms is just an interesting fact.

We can bind up space and time, as well, which also provokes feelings of incongruity when we start to talk about gravitational effects on relative elapsed time, or relative speed effects.… Read the rest

A Learning Smorgasbord

Mark DavisLeave a comment

Compliments of a discovery by Futurism, the paper The Autodidactic Universe by a smorgasbord of contemporary science and technology thinkers caught my attention for several reasons. First was Jaron Lanier as a co-author. I knew Jaron’s dad, Ellery, when I was a researcher at NMSU’s now defunct Computing Research Laboratory. Ellery had returned to school to get his psychology PhD during retirement. In an odd coincidence, my brother had also rented a trailer next to the geodesic dome Jaron helped design and Ellery lived after my brother became emancipated in his teens. Ellery may have been his landlord, but I am not certain of that.

The paper is an odd piece of kit that I read over two days in fits and spurts with intervening power lifting interludes (I recently maxed out my Bowflex and am considering next steps!). It initially has the feel of physicists trying to reach into machine learning as if the domain specialists clearly missed something that the hardcore physical scientists have known all along. But that concern dissipated fairly quickly and the paper settled into showing isomorphisms between various physical theories and the state evolution of neural networks. OK, no big deal. Perhaps they were taken by the realization that the mathematics of tensors was a useful way to describe network matrices and gradient descent learning. They then riffed on that and looked at the broader similarities between the temporal evolution of learning and quantum field theory, approaches to quantum gravity, and cosmological ideas.

The paper, being a smorgasbord, then investigates the time evolution of graphs using a lens of graph theory. The core realization, as I gleaned it, is that there are more complex graphs (visually as well as based on the diversity of connectivity within the graph) and pointlessly uniform or empty ones.… Read the rest