tag:blogger.com,1999:blog-22973357.post116448226887445326..comments2023-09-27T07:44:19.769-04:00Comments on Sabine Hossenfelder: Backreaction: The Beauty of it AllSabine Hossenfelderhttp://www.blogger.com/profile/06151209308084588985noreply@blogger.comBlogger17125tag:blogger.com,1999:blog-22973357.post-48626236101219287892007-11-16T10:39:00.000-05:002007-11-16T10:39:00.000-05:00Hi Docatonic,True, thanks for adding that info. Wh...Hi Docatonic,<BR/><BR/>True, thanks for adding that info. What was humming in my head however was the version from <A HREF="http://www.youtube.com/watch?v=8ercqDP18ms" REL="nofollow">TBN</A>. Best,<BR/><BR/>B.Sabine Hossenfelderhttps://www.blogger.com/profile/06151209308084588985noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-54248334891132548652007-11-16T09:10:00.000-05:002007-11-16T09:10:00.000-05:00"Lovers In A Dangerous Time" is by Bruce Cockburn,..."Lovers In A Dangerous Time" is by Bruce Cockburn, not The Barenaked Ladies.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-22973357.post-1165188535599667782006-12-03T18:28:00.000-05:002006-12-03T18:28:00.000-05:00Hi CIP,Thanks for the quotations! I esp. like the ...Hi CIP,<BR/><BR/>Thanks for the quotations! I esp. like the one by Bacon, perfect symmetry is just boring, it's the mastery of breaking the symmetry that succeeds to cause all the beauty of life. Best,<BR/><BR/>B.Sabine Hossenfelderhttps://www.blogger.com/profile/06151209308084588985noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-1165087901729941682006-12-02T14:31:00.000-05:002006-12-02T14:31:00.000-05:00re: symmetry and broken symmetry.The epigraph to C...re: symmetry and broken symmetry.<BR/><BR/>The epigraph to Chandrasekhar's <I>The Mathematical Theory of Black Holes</I> has a couple of quotes (from memory since the book is at work, and I'm not):<BR/><BR/>Heisenberg: <I>Beauty consists of the proper proportion of the parts to the whole, and to each other.</I><BR/><BR/>Bacon: <I>There is no thing of excellent beauty that hath not some CapitalistImperialistPighttps://www.blogger.com/profile/17523405806602731435noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-1164984430589275892006-12-01T09:47:00.000-05:002006-12-01T09:47:00.000-05:00Great post! I tried to comment the other day, but...Great post! I tried to comment the other day, but blogger was down.Rae Annhttps://www.blogger.com/profile/10239791074376508016noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-1164852843623343592006-11-29T21:14:00.000-05:002006-11-29T21:14:00.000-05:00I don't know for sure why this comment section dev...I don't know for sure why this comment section developed into a discussion about the speed of light, but cosmic coincidence or not, I've twisted my brain most of today about this issue. Here's a question: <BR/><BR/>There is a parameter in the Lorentz-transformation which is 'c'. How precisely do we actually know this speed is the speed of light? Can we make the speed of light energy dependent (Sabine Hossenfelderhttps://www.blogger.com/profile/06151209308084588985noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-1164841033323229212006-11-29T17:57:00.000-05:002006-11-29T17:57:00.000-05:00Nonsense! The cosmic speed limit is no more immuta...<I>Nonsense! The cosmic speed limit is no more immutable than CP symmetry, Newton's second law, and the massless neutrino</I><BR/><BR/>Strong words... <BR/><BR/>But it seems to me that your examples differ quite a lot in the degree to which possible deviations of these "laws" are hard-wired to other areas of physics. <BR/><BR/>I mean, you may introduce a neutrino mass in the standard model with stefanhttps://www.blogger.com/profile/09495628046446378453noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-1164751060313684512006-11-28T16:57:00.000-05:002006-11-28T16:57:00.000-05:00The problem is that you can't say, 'Hey, what woul...<I>The problem is that you can't say, 'Hey, what would happen if you could go faster than the speed of light?' because that's totally physically impossible.... Physics is a complete package: once you decide to ignore one physical law, you're ignoring them all.</I><BR/><BR/>Nonsense! The cosmic speed limit is no more immutable than CP symmetry, Newton's second law, and the massless neutrino. It's Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-22973357.post-1164733914034465482006-11-28T12:11:00.000-05:002006-11-28T12:11:00.000-05:00Thought experiments can push forward other ideas?I...Thought experiments can push forward other ideas?<BR/><BR/><A HREF="http://eskesthai.blogspot.com/2006/11/breakthrough-propulsion-physics.html" REL="nofollow">IN "weak field understanding" we know the loop process is symmetric?</A>PlatoHagelhttps://www.blogger.com/profile/00849253658526056393noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-1164726115712399522006-11-28T10:01:00.000-05:002006-11-28T10:01:00.000-05:00Bee... Excellent post!-cvjBee... Excellent post!<BR/><BR/>-cvjAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-22973357.post-1164723079063123352006-11-28T09:11:00.000-05:002006-11-28T09:11:00.000-05:00Hi Arun,The last video, the one from the Barenaked...Hi Arun,<BR/><BR/>The last video, the one from the Barenaked Ladies? I guess you mean the Dove-video? <BR/><BR/><I>as though you suddenly pushed the reader into a different area of the Landscape. Or is the photoshopped face on the billboard another aspect of the false coloring we do to visualize the cosmic background radiation? and all the apparatus we use to look at the universe? </I><BR/><BR/>Sabine Hossenfelderhttps://www.blogger.com/profile/06151209308084588985noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-1164721638447931102006-11-28T08:47:00.000-05:002006-11-28T08:47:00.000-05:00Good post!The last video was on a different wavele...Good post!<BR/><BR/>The last video was on a different wavelength from all the rest, in my opinion. It is as though you suddenly pushed the reader into a different area of the Landscape. Or is the photoshopped face on the billboard another aspect of the false coloring we do to visualize the cosmic background radiation? and all the apparatus we use to look at the universe? <BR/><BR/>"Every Arunhttps://www.blogger.com/profile/03451666670728177970noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-1164685684458082472006-11-27T22:48:00.000-05:002006-11-27T22:48:00.000-05:00Yes I enjoyed this post very much too.A "1 inch" e...Yes I enjoyed this post very much too.<BR/><BR/>A "1 inch" equation is always nice for sure. Entropically "matter distinctions" can become very complex. Where did they arise from?<BR/><BR/>Doesn't this set up certain assumptions on it's own?<BR/><BR/>http://www.adrianbruce.com/Symmetry/animals/butanim.gif<BR/><BR/><A HREF="http://www.adrianbruce.com/Symmetry/" REL="nofollow">The butterfly is the PlatoHagelhttps://www.blogger.com/profile/00849253658526056393noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-1164673403921916452006-11-27T19:23:00.000-05:002006-11-27T19:23:00.000-05:00Hi Quasar,Thanks :-) Regarding your 1st comment: I...Hi Quasar,<BR/><BR/>Thanks :-) Regarding your 1st comment: I didn't link to the site because I share their opinion, but because I meant to underline that questions like this are just fascinating: a game of mind, a thought experiment, they captures our imagination and occupy our dreams. If you don't know it, I can recommend Joao's book<BR/><BR/><A HREF="http://www.amazon.com/Sabine Hossenfelderhttps://www.blogger.com/profile/06151209308084588985noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-1164671969938284712006-11-27T18:59:00.000-05:002006-11-27T18:59:00.000-05:00PS - Bee, I second StefanGreat post, great pics, g...PS - Bee, I second Stefan<BR/>Great post, great pics, great linksQUASAR9https://www.blogger.com/profile/00593390598251093182noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-1164667913673243032006-11-27T17:51:00.000-05:002006-11-27T17:51:00.000-05:00Dear Bee,a very beautiful post, and one which give...Dear Bee,<BR/><BR/>a very beautiful post, and one which gives a lot to ponder :-) As always, your choice of pictures and links is just amazing!<BR/><BR/>Best, stefanstefanhttps://www.blogger.com/profile/09495628046446378453noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-1164666430589683042006-11-27T17:27:00.000-05:002006-11-27T17:27:00.000-05:00The problem is that you can't say, 'Hey, what woul...<EM>The problem is that you can't say, 'Hey, what would happen if you could go faster than the speed of light?' because that's totally physically impossible. It's not possible to go faster than the speed of light, so the laws of physics can't possibly say what would happen if you imagine things that way in some hypothetical universe. Physics is a complete package: once you decide to ignore one QUASAR9https://www.blogger.com/profile/00593390598251093182noreply@blogger.com