John,
I see that you're still subscribed. Thanks for hanging out all these years
and collaborating with Nick and Owen on "My Way or the Highway
<https://www.jasss.org/9/2/4.html>" (MOTH).
I just noticed one of your papers related to your PhD Thesis. The paper was
from 60 years ago - cool!
"REFLECTIVE FUNCTORS IN GENERAL TOPOLOGY AND ELSEWHERE"
local .pdf link
<https://redfish.com/papers/Kennison_Reflective-Functors-in-General-TopologyS0002-9947-1965-0174611-9.pdf>
John Zingale, maybe you can help me understand if reflectors and
coreflectors mentioned in John's paper relate to the duality of the
functions in bidirectional path tracing? John K., if we make any headway,
maybe we'll bug you offlist with questions.
I'll go ahead and manually unsubscribe you.
-Stephen
--- -. . ..-. .. ... .... - .-- --- ..-. .. ... ....
stephen.gue...@redfish.com
https://simtable.com
stephengue...@fas.harvard.edu
Harvard Visualization Research and Teaching Lab
<https://hwpi.harvard.edu/eps-visualization-research-laboratory/home>
mobile: (505)577-5828
On Sun, Nov 3, 2024 at 2:53 PM John Kennison <jkenni...@clarku.edu> wrote:
> My name is John Kennison. and In have been receiving intriguing emails
> from Friam. However, I am now bogged down in several other pursuits and I
> do not have the time to keep track of the provocative issues that are
> discussed in Friam.
>
> So, I would now regretfully like to stop getting emails from Friam. How
> dom I dom this?
>
> --John Kennison
>
>
>
> ------------------------------
> *From:* Friam <friam-boun...@redfish.com> on behalf of glen <
> geprope...@gmail.com>
> *Sent:* Friday, November 1, 2024 11:45 AM
> *To:* friam@redfish.com <friam@redfish.com>
> *Subject:* [EXT] Re: [FRIAM] 6 to 1, 12/2 to the other
>
> I suggest you are the most qualified to answer your own question. You
> might start with the Wolfram Physics pages. E.g.
> https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.wolframphysics.org%2Ftechnical-introduction%2Fbasic-form-of-models%2Fthe-representation-of-rules%2Findex.html&data=05%7C02%7Cjkennison%40clarku.edu%7C7ee9881cb11c44c334d408dcfa8c5fcd%7Cb5b2263d68aa453eb972aa1421410f80%7C0%7C0%7C638660730920617296%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C40000%7C%7C%7C&sdata=cNIhIAVP0zBi%2FQ6tDw%2BL387Q3k71YErtG522qtFK3DE%3D&reserved=0
> <https://www.wolframphysics.org/technical-introduction/basic-form-of-models/the-representation-of-rules/index.html>
>
> On 10/31/24 11:29, Frank Wimberly wrote:
> > Some of you know that in my last position at Carnegie Mellon I was
> working on causal reasoning. We made a distinction between probabilistic
> causation (smoking causes cancer) and actual causation (dropping the bottle
> caused it to break). In the former case we used graphical models,
> specifically parameterized Bayes networks to model the causal relationships
> among a set of variables. In the latter case a simple directed graph
> suffices. In the Wolfram, Gorard, Sorkin work do they make this
> distinction?
> >
> > Frank
> >
> > ---
> > Frank C. Wimberly
> > 140 Calle Ojo Feliz,
> > Santa Fe, NM 87505
> >
> > 505 670-9918
> > Santa Fe, NM
> >
> > On Thu, Oct 31, 2024, 8:46 AM glen <geprope...@gmail.com <
> mailto:geprope...@gmail.com <geprope...@gmail.com>>> wrote:
> >
> > Since we're talking about Sabine and anastomosis, I found this video
> interesting"
> >
> > This Theory of Everything Could Actually Work: Wolfram’s Hypergraphs
> >
> https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fyoutu.be%2F-yzdjziS-bo%3Fsi%3Dw5av9XcTUqjodJ5V&data=05%7C02%7Cjkennison%40clarku.edu%7C7ee9881cb11c44c334d408dcfa8c5fcd%7Cb5b2263d68aa453eb972aa1421410f80%7C0%7C0%7C638660730920640424%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C40000%7C%7C%7C&sdata=a0cpCUINGfmEDGMOGAFFmzOz2DSeVHahwU9rqmri6lI%3D&reserved=0
> <https://youtu.be/-yzdjziS-bo?si=w5av9XcTUqjodJ5V> <
> https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fyoutu.be%2F-yzdjziS-bo%3Fsi%3Dw5av9XcTUqjodJ5V&data=05%7C02%7Cjkennison%40clarku.edu%7C7ee9881cb11c44c334d408dcfa8c5fcd%7Cb5b2263d68aa453eb972aa1421410f80%7C0%7C0%7C638660730920656233%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C40000%7C%7C%7C&sdata=6TAcNhbfFnPfVq3ccx%2FEk1uSXVUcEXO%2FgINngeAXmIk%3D&reserved=0
> <https://youtu.be/-yzdjziS-bo?si=w5av9XcTUqjodJ5V>>
> >
> > "The idea that the laws of physics are a sort of computation has a
> rather basic problem. It's incompatible with Einstein's theories of general
> relativity and it's not a small mismatch. You see, any type of computation
> works in steps. If it doesn't, then calling it a computation is really just
> a weird way of talking about the laws of physics that we already use. A
> computation has some sort of update rule. [snip] The problem with this idea
> isn't just that Einstein's theories don't use graphs. But that we know you
> can't use graphs to even properly approximate them. The gaps in the graphs
> and the updates in time steps can't be hidden away. They will always be
> observable. And we haven't observed them. [snip] As a consequences, you
> can't approximate general relativity with a graph while respecting all its
> symmetries."
> >
> > She then mentions her paper: A No-go theorem for Poincaré-invariant
> networks <
> https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Farxiv.org%2Fabs%2F1504.06070&data=05%7C02%7Cjkennison%40clarku.edu%7C7ee9881cb11c44c334d408dcfa8c5fcd%7Cb5b2263d68aa453eb972aa1421410f80%7C0%7C0%7C638660730920671545%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C40000%7C%7C%7C&sdata=54PKNyAEmTECO5YrmnT%2Bbatv4%2FNSwG0mllOGpt3NOGU%3D&reserved=0
> <
> https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Farxiv.org%2Fabs%2F1504.06070&data=05%7C02%7Cjkennison%40clarku.edu%7C7ee9881cb11c44c334d408dcfa8c5fcd%7Cb5b2263d68aa453eb972aa1421410f80%7C0%7C0%7C638660730920691394%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C40000%7C%7C%7C&sdata=5hwIQAE9WqKt5%2Fpj9Wqsm2paU0jn2JV6JB1J0DFsd94%3D&reserved=0
> <https://arxiv.org/abs/1504.06070>>>, which I'm incompetent to read. She
> continues:
> >
> > "The new Wolfram approach uses what they call 'hypergraphs'. Instead
> of just using graphs to describe space-time and particles in them, they
> collect these graphs into groups. So the hypergraph is really a collection
> of graphs. The points in this graph describe space-time and can also
> describe matter in the space-time, depending on their properties. But the
> lengths in the hypergraph are not physical. They have no length. They just
> quantify the relations between the points. And since they have no length,
> there's no problem with them becoming shorter or longer for different
> observers. It's actually a clever idea. I had an exchange with the guy who
> works for Wolfram Research who did most of this work, I think, Jonathan
> Gorard, in 2020. I came to the conclusion that this is indeed possible. But
> it's been done before. This is exactly the idea an approach called 'Causal
> Sets' put forward by Rafael Sorkin. As the name suggests, in this approach
> space-time is a set of points, like
> > the points in the hypergraph. And these points have causal
> relations, which you can depict with arrows. So that gives you a graph. And
> this will, indeed, respect Einstein's theory. If you look at what they've
> [Gorard et al] been doing after that announcement in 2020, they've worked
> more on the relation between Wolfram's hypergraph and causal sets. Most of
> this work has been done, it seems, by Jonathan Gorard. He has also looked
> at how to use that to do general relativity and how it prevents
> singularities, which the causal sets people never figured out how to do.
> [snip] However, the causal sets people already showed that it's possible to
> put discretized versions of differential equations on these graphs. So
> maybe it isn't as difficult as it sounds. So when I look at this today, I
> honestly think this research program is going very well. And I think it's
> about time that physicists pay a little more attention to it."
> >
> > [Gorard et al]
> https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fscholar.google.com%2Fcitations%3Fhl%3Den%26user%3DItG_Nz0AAAAJ%26view_op%3Dlist_works%26sortby%3Dpubdate&data=05%7C02%7Cjkennison%40clarku.edu%7C7ee9881cb11c44c334d408dcfa8c5fcd%7Cb5b2263d68aa453eb972aa1421410f80%7C0%7C0%7C638660730920706686%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C40000%7C%7C%7C&sdata=0p3tVGgwaKT70IRDOqDDWRKpuJs1HHcqKCrvDkgID%2Bk%3D&reserved=0
> <https://scholar.google.com/citations?hl=en&user=ItG_Nz0AAAAJ&view_op=list_works&sortby=pubdate>
> <
> https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fscholar.google.com%2Fcitations%3Fhl%3Den%26user%3DItG_Nz0AAAAJ%26view_op%3Dlist_works%26sortby%3Dpubdate&data=05%7C02%7Cjkennison%40clarku.edu%7C7ee9881cb11c44c334d408dcfa8c5fcd%7Cb5b2263d68aa453eb972aa1421410f80%7C0%7C0%7C638660730920722019%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C40000%7C%7C%7C&sdata=ldx9xvQnNdtCZv6rUQEX3JRvcoYLjG4ARRHI%2FPRUnuA%3D&reserved=0
> <https://scholar.google.com/citations?hl=en&user=ItG_Nz0AAAAJ&view_op=list_works&sortby=pubdate>
> >
> >
> >
> > On 10/30/24 17:21, Stephen Guerin wrote:
> > > On Wed, Oct 30, 2024 at 12:32 PM glen <geprope...@gmail.com <
> mailto:geprope...@gmail.com <geprope...@gmail.com>> <mailto:
> geprope...@gmail.com <mailto:geprope...@gmail.com <geprope...@gmail.com>>>>
> wrote:
> > >
> > > The idealists will never stop idealizing and then reifying
> their ideal. To Engineer is Human. But those of us who know (or merely
> confidently believe) reality is made up of a diverse non-wellfounded set of
> ... what? ... urges? ... nano-agents? ... IDK, whatever, will always
> anastomose that built environment ... or at least reclaim it like a hermit
> crab squatting in a tin can.
> > >
> > >
> > > I like the visual and deeper concept, Glen. A kind of wuwei
> attitude.
> > >
> > > sequeing impermanence of political structures to over-reified
> software:
> > >
> > > Today at lunch, John Zingale lamented that the residence time of
> code in the system seems to be decreasing. Perhaps Anastomotic Computing is
> the next big thing. :-)
> >
>
>
> --
> ꙮ Mɥǝu ǝlǝdɥɐuʇs ɟᴉƃɥʇ' ʇɥǝ ƃɹɐss snɟɟǝɹs˙ ꙮ
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