tag:blogger.com,1999:blog-22973357.post8937239697298351731..comments2023-09-27T07:44:19.769-04:00Comments on Sabine Hossenfelder: Backreaction: Causal DiagramsSabine Hossenfelderhttp://www.blogger.com/profile/06151209308084588985noreply@blogger.comBlogger89125tag:blogger.com,1999:blog-22973357.post-28888864219908540142018-10-12T00:31:58.922-04:002018-10-12T00:31:58.922-04:00I have the images, that's not the problem. The...I have the images, that's not the problem. The problem is that I have 1000+ blogposts which now link to urls that no longer exist. Sabine Hossenfelderhttps://www.blogger.com/profile/06151209308084588985noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-28526793569404033692018-10-11T18:13:16.958-04:002018-10-11T18:13:16.958-04:00Is it possible to use a different image hoster (li...Is it possible to use a different image hoster (like imgur) to have images (unless you've lost them)?KimanoTigerhttps://www.blogger.com/profile/16877702220359996889noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-907585702129859602018-06-23T23:52:59.739-04:002018-06-23T23:52:59.739-04:00Sorry, my institution moved my account, so all the...Sorry, my institution moved my account, so all the links are broken, and now they're no longer willing to leave the images on the server at all. I am trying to find a solution. Sabine Hossenfelderhttps://www.blogger.com/profile/06151209308084588985noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-18947806723724631542018-06-22T12:09:49.444-04:002018-06-22T12:09:49.444-04:00Hey, hello, unfortunately I cannot see images :(Hey, hello, unfortunately I cannot see images :(Anonymoushttps://www.blogger.com/profile/16400053926686675852noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-76331601995686476492009-11-30T22:23:10.585-05:002009-11-30T22:23:10.585-05:00Hermann Weyl once commented:
'While topology ...Hermann Weyl once commented:<br /><br />'While topology has succeeded fairly well in mastering continuity, we do not yet understand the inner meaning of the restriction to differentiable manifolds. Perhaps one day physics will be able to discard it. '<br /><br />We are now ready to do that. In fact it has been done and the results are so amazing that most theoretical physicists cannot Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-22973357.post-59293498686416639292009-11-26T18:49:45.869-05:002009-11-26T18:49:45.869-05:00/*..so energy then, is information?..*/
Longitudin.../*..so energy then, is information?..*/<br />Longitudinal wave is spreading energy, but no information.Zephirhttps://www.blogger.com/profile/06010623752049244967noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-82989100587158493242009-11-26T05:45:19.112-05:002009-11-26T05:45:19.112-05:00I have a bit of a discussion about information her...I have a bit of a discussion about information <a href="http://www.ipod.org.uk/reality/reality_universe_computer.asp" rel="nofollow">here</a>.Andrew Thomashttps://www.blogger.com/profile/03852211910001840777noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-65473492451287265282009-11-26T02:16:26.060-05:002009-11-26T02:16:26.060-05:00Hi Zephir,
Bee:The mere existence of the paradox ...Hi Zephir,<br /><br /><a href="http://backreaction.blogspot.com/2009/11/thoughts-and-experiments.html#c1745514202658383167" title="Thoughts and Experiments" rel="nofollow">Bee</a>:<i>The mere existence of the paradox tells us that there has to be a solution (another green apple) somewhere. The question is not whether there is such a solution but what it is (where the apple is). Alice might come PlatoHagelhttps://www.blogger.com/profile/00849253658526056393noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-25354194180924851282009-11-25T17:20:55.510-05:002009-11-25T17:20:55.510-05:00If these are casual diagrams, I wonder what diagra...If these are casual diagrams, I wonder what diagrams following the dress code look like?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-22973357.post-73250170698688189762009-11-24T21:49:00.826-05:002009-11-24T21:49:00.826-05:00Information is just a an postmodern euphemism in t...Information is just a an postmodern euphemism in this context, as no information can spread without energy.Zephirhttps://www.blogger.com/profile/06010623752049244967noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-70065517173624208432009-11-23T15:13:29.797-05:002009-11-23T15:13:29.797-05:00Bee,
One question.
What is "the information...Bee,<br /><br />One question.<br /><br />What is "the information" that dissipates?<br /><br />Best,PlatoHagelhttps://www.blogger.com/profile/00849253658526056393noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-48878660562252947112009-11-23T15:04:11.577-05:002009-11-23T15:04:11.577-05:00Oh and one more thing,
Under the Relativity banne...Oh and one more thing,<br /><br />Under the Relativity banner it is only about gravity?<br /><br />IN microscopic universe, it is a different story, that has been mapped detailing, to lead one to suppose phenomenological testing carefully marks the pathway?<br /><br /> Theoretical postulations as well.<br /><br /> These have to be grounded in fact for assumption to move theorization position PlatoHagelhttps://www.blogger.com/profile/00849253658526056393noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-55224187970222822862009-11-23T14:56:07.142-05:002009-11-23T14:56:07.142-05:00Of course not to make "light of":) but u...Of course not to make "light of":) but understanding critical density associated with our current universe, or, relating to a "three body problem" helps to orientate the mind too, "changes going on in a region of space," much as you see, changes using assumption of non-euclidean perspectives according too, an Gaussian assumption of, while understanding well it's PlatoHagelhttps://www.blogger.com/profile/00849253658526056393noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-22861323822775992282009-11-23T06:57:40.094-05:002009-11-23T06:57:40.094-05:00This is how "causual diagram" could appe...This is how "causual diagram" could appear in aether theory.<br /><br />http://tinyurl.com/ybpafxeZephirhttps://www.blogger.com/profile/06010623752049244967noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-11359024075940495162009-11-23T05:07:35.025-05:002009-11-23T05:07:35.025-05:00Casual space-time diagrams have good meaning in AW...Casual space-time diagrams have good meaning in AWT, which describes motion of matter through space-time along geodesics by spreading of energy through density gradient simmilar to water surface, i.e. by Hamiltonian flow. <br /><br />After then the time dimension is direction parallel to density gradient, i.e. perpendicular to watter surface and we can model the matter motion by path of rays Zephirhttps://www.blogger.com/profile/06010623752049244967noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-75792530094501911232009-11-23T05:07:34.567-05:002009-11-23T05:07:34.567-05:00I dunno. Maybe it's because there's three ...I dunno. Maybe it's because there's three dimensions of space but only one dimension of time. You can't get those geometrical deformations in only one dimension.<br /><br />(I think I'll stop thinking about this now!)Andrew Thomashttps://www.blogger.com/profile/03852211910001840777noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-47708544191925039922009-11-23T04:53:44.980-05:002009-11-23T04:53:44.980-05:00This comment has been removed by the author.Andrew Thomashttps://www.blogger.com/profile/03852211910001840777noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-10485588041837556052009-11-23T04:48:28.144-05:002009-11-23T04:48:28.144-05:00No, it's not a load of twaddle. However, Pope&...No, it's not a load of twaddle. However, Pope's argument about no escaping the lightcone entirely neglects to mention that in contrast to you heading towards the year 2010 in a basically entirely flat space-time, the curvature near the singularity diverges. If you calculate tidal forces, you get indeed pulled and stretched. Best,<br />B.Sabine Hossenfelderhttps://www.blogger.com/profile/06151209308084588985noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-38513754052723314702009-11-23T04:37:55.256-05:002009-11-23T04:37:55.256-05:00Hi the Pope,
Yes, considering the geometry is the ...Hi the Pope,<br />Yes, considering the geometry is the right way to do it.<br /><br />The Pope said: <em>"I'm slightly concerned about your statement: 'your progress in space is uni-directional, just like your progress in time is uni-directional outside the horizon.' To speak of taking evasive action is like trying to take evasive action to avoid hitting your 50th birthday."Andrew Thomashttps://www.blogger.com/profile/03852211910001840777noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-88098325132622834092009-11-23T02:37:41.124-05:002009-11-23T02:37:41.124-05:00I can't resist the temptation to point out tha...I can't resist the temptation to point out that the penrose diagram of the black hole helps to dispel another very common misconception: the idea that inside the bh you are trapped there because "the gravitational pull is so strong". You know the routine: "a bh is black because gravity is so strong that even light can't escape." This is not true.<br /><br />Consider Pope Maledict XVInoreply@blogger.comtag:blogger.com,1999:blog-22973357.post-62470737923633201752009-11-22T19:04:19.852-05:002009-11-22T19:04:19.852-05:00Hi Andrew, glad to be of help. You in turn have tr...Hi Andrew, glad to be of help. You in turn have treated us to the rare spectacle of somebody actually changing his mind!<br /><br />However, while I don't want to go on and on about this, I'm slightly concerned about your statement: "your progress in space is uni-directional, just like your progress in time is uni-directional outside the horizon."<br /><br />This is a bit Pope Maledict XVInoreply@blogger.comtag:blogger.com,1999:blog-22973357.post-57144065557627155612009-11-22T18:35:17.078-05:002009-11-22T18:35:17.078-05:00This comment has been removed by the author.Andrew Thomashttps://www.blogger.com/profile/03852211910001840777noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-36580458103736129162009-11-22T18:27:05.873-05:002009-11-22T18:27:05.873-05:00This comment has been removed by the author.Andrew Thomashttps://www.blogger.com/profile/03852211910001840777noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-5556760197280941282009-11-22T13:00:49.466-05:002009-11-22T13:00:49.466-05:00Hi Giotis,
Yes it’s true that my argument is not ...Hi Giotis,<br /><br />Yes it’s true that my argument is not mathematically rigorous and yet I would say it might not to be able to, since not only does GR break down at the point of a singularity, yet more specifically the math which forms and supports its foundations. What I was actually attempting to convey is while as being a boundary can be taken as something with nothing beyond,it can alsoPhil Warnellhttps://www.blogger.com/profile/15671311338712852659noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-60029048660847825122009-11-22T12:40:23.571-05:002009-11-22T12:40:23.571-05:00Phil, this is indeed true and it is a clever way t...Phil, this is indeed true and it is a clever way to bypass the problem but you must do it in a mathematical rigorous way. As far as I know there is no general solution for the identification of that boundary on a manifold with lorentzian metric (Bee may have more info on this). Singularities exist of course but you cannot think of them as points on the space-time manifold because the notion of Giotisnoreply@blogger.com