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Time travel article

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cody dooderson

Time travel article

An article came out recently about a proof that time travel would not lead to the butterfly effect. https://www.popularmechanics.com/science/math/amp34146674/paradox-free-time-travel-is-possible/ . This sounds great but does anybody understand it enough to explain it to a novice? Has this idea been around for a while, because Netflix's show The Umbrella Academy touches on it?

The article says that the proof is backed up by research from Los Alamos and some experience with random walkers. I am pretty familiar with the latter. My experience is that some random walkers, a recursive path search, and patience can solve a lot of basic computer science problems.

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Marcus G. Daniels

Re: Time travel article

It seems to be a thought experiment on whether some process functions can exist while preserving freedom of action. They even say they aren’t concerned with space-time geometry and conclude “Further studies will be necessary to find genuine physical scenarios realising the acausal processes we have discovered.” Somehow my world is not shaken.

From: Friam <[hidden email]> On Behalf Of cody dooderson
Sent: Saturday, September 26, 2020 1:52 PM
To: The Friday Morning Applied Complexity Coffee Group <[hidden email]>
Subject: [FRIAM] Time travel article

Steve Smith

Re: Time travel article

In reply to this post by cody dooderson

Cody -

I think maybe someone traveled back in time to change the attribution of "the butterfly effect" from that first (recognized) statement by Lorenz in the 70's and in the process (I think) valuable nuances of meaning. Lorenz is worth reading in his original...

technologyreview.com/2011/02/22/196987/when-the-butterfly-effect-took-flight/

Maybe it was Marty McButterFly in a DeLorean with a Flux Capacitor... Do you remember seeing the movie-prop DeLorean's in the parking lot at the hotel in Boulder when we visited NREL? Or was that in another timeline with another Cody McFly?

I'd like to be of more use re: a novice explanation... I *can* offer you this near-seminal paper in reversible computation (and physics) from 1984ish.. which I have not read since! I think the Los Alamos work references it?

http://strangepaths.com/wp-content/uploads/2007/11/conservativelogic.pdf

- Steve

PS. it is worth noting that William Gibson's recent (2016 ++) novels known colloquially as his "Jackpot novels" touches very eloquently on these concepts albeit in a quirky Gibsonian Way...

On 9/26/20 2:51 PM, cody dooderson wrote:

An article came out recently about a proof that time travel would not lead to the butterfly effect. https://www.popularmechanics.com/science/math/amp34146674/paradox-free-time-travel-is-possible/ . This sounds great but does anybody understand it enough to explain it to a novice? Has this idea been around for a while, because Netflix's show The Umbrella Academy touches on it?
The article says that the proof is backed up by research from Los Alamos and some experience with random walkers. I am pretty familiar with the latter. My experience is that some random walkers, a recursive path search, and patience can solve a lot of basic computer science problems.
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Steve Smith

Re: Time travel article

Cody McButterFly -

Maybe part of a reality series "Fireball Run", vaguely related (maybe) to the classic gumball rally?

https://en.wikipedia.org/wiki/Gumball_3000

I don't care what Los Alamos or MIT or Germaine Tobar say, *DON"T drive the DeLorean backwards at 88MPH" (and don't get the Gremlins wet either).

Here's ya some "reversibility" https://www.youtube.com/watch?v=UpJ-kGII074

- Doc Smith-Brown

Cody -

I think maybe someone traveled back in time to change the attribution of "the butterfly effect" from that first (recognized) statement by Lorenz in the 70's and in the process (I think) valuable nuances of meaning.   Lorenz is worth reading in his original...

technologyreview.com/2011/02/22/196987/when-the-butterfly-effect-took-flight/

Maybe it was Marty McButterFly in a DeLorean with a Flux Capacitor...   Do you remember seeing the movie-prop DeLorean's in the parking lot at the hotel in Boulder when we visited NREL?   Or was that in another timeline with another Cody McFly?

I'd like to be of more use re: a novice explanation...   I *can* offer you this near-seminal paper in reversible computation (and physics) from 1984ish.. which I have not read since!   I think the Los Alamos work references it?

http://strangepaths.com/wp-content/uploads/2007/11/conservativelogic.pdf

- Steve

PS. it is worth noting that William Gibson's recent (2016 ++) novels known colloquially as his "Jackpot novels" touches very eloquently on these concepts albeit in a quirky Gibsonian Way...

On 9/26/20 2:51 PM, cody dooderson wrote:
An article came out recently about a proof that time travel would not lead to the butterfly effect. https://www.popularmechanics.com/science/math/amp34146674/paradox-free-time-travel-is-possible/ . This sounds great but does anybody understand it enough to explain it to a novice? Has this idea been around for a while, because Netflix's show The Umbrella Academy touches on it?
The article says that the proof is backed up by research from Los Alamos and some experience with random walkers. I am pretty familiar with the latter. My experience is that some random walkers, a recursive path search, and patience can solve a lot of basic computer science problems.
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Jochen Fromm-5

Re: Time travel article

In reply to this post by cody dooderson

Here is the link to the preprint

https://arxiv.org/abs/2001.02511

Quantum theory is mentioned in the article only in the introduction, although the place where Quantum Theory and General Relativity meet is where it gets interesting :-/

Time travel is an interesting topic. Time travel forward in time (as it is described for example in the novel "Marooned in Realtime" by Vernor Vinge) is far more likely than time travel back in time.

-J.

-------- Original message --------

From: cody dooderson <[hidden email]>

Date: 9/26/20 22:52 (GMT+01:00)

To: The Friday Morning Applied Complexity Coffee Group <[hidden email]>

Subject: [FRIAM] Time travel article

Steve Smith

Re: Time travel article

In reply to this post by cody dooderson

Jochen -

I know a lot of people who would like to "bobble up" until Nov 4 or maybe Jan 21 or maybe after 2030... but Vinge's tale is very much a cautionary one!

- Steve

Here is the link to the preprint

https://arxiv.org/abs/2001.02511

Quantum theory is mentioned in the article only in the introduction, although the place where Quantum Theory and General Relativity meet is where it gets interesting :-/

Time travel is an interesting topic. Time travel forward in time (as it is described for example in the novel "Marooned in Realtime" by Vernor Vinge) is far more likely than time travel back in time.

-J.

-------- Original message --------

From: cody dooderson [hidden email]

Date: 9/26/20 22:52 (GMT+01:00)

To: The Friday Morning Applied Complexity Coffee Group [hidden email]

Subject: [FRIAM] Time travel article

An article came out recently about a proof that time travel would not lead to the butterfly effect. https://www.popularmechanics.com/science/math/amp34146674/paradox-free-time-travel-is-possible/ . This sounds great but does anybody understand it enough to explain it to a novice? Has this idea been around for a while, because Netflix's show The Umbrella Academy touches on it?
The article says that the proof is backed up by research from Los Alamos and some experience with random walkers. I am pretty familiar with the latter. My experience is that some random walkers, a recursive path search, and patience can solve a lot of basic computer science problems.
- .... . -..-. . -. -.. -..-. .. ... -..-. .... . .-. .
FRIAM Applied Complexity Group listserv
Zoom Fridays 9:30a-12p Mtn GMT-6  bit.ly/virtualfriam
un/subscribe http://redfish.com/mailman/listinfo/friam_redfish.com
archives: http://friam.471366.n2.nabble.com/
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