Comments on: Arrow of Time FAQ http://blogs.discovermagazine.com/cosmicvariance/2007/12/03/arrow-of-time-faq/ Random samplings from a universe of ideas. Sat, 04 Jul 2009 23:30:14 +0000 http://wordpress.org/?v=2.3.1 By: Recordações do Futuro. Por que não? « Comentários, Críticas, Dicas etc. http://blogs.discovermagazine.com/cosmicvariance/2007/12/03/arrow-of-time-faq/#comment-73287 Recordações do Futuro. Por que não? « Comentários, Críticas, Dicas etc. Tue, 28 Apr 2009 15:39:37 +0000 http://blogs.discovermagazine.com/cosmicvariance/2007/12/03/arrow-of-time-faq/#comment-73287 [...] more: Time reversal, by A. Zee, Boltzmann Antropic Brain, Arrow of Time FAQ, Feynman on Boltzmann Brain. Tudo é muito legal, mas a gente gasta um bom tempo lendo e pensando. [...] […] more: Time reversal, by A. Zee, Boltzmann Antropic Brain, Arrow of Time FAQ, Feynman on Boltzmann Brain. Tudo é muito legal, mas a gente gasta um bom tempo lendo e pensando. […]

]]> By: Have a Thermodynamically Consistent Christmas | Cosmic Variance | Discover Magazine http://blogs.discovermagazine.com/cosmicvariance/2007/12/03/arrow-of-time-faq/#comment-54531 Have a Thermodynamically Consistent Christmas | Cosmic Variance | Discover Magazine Thu, 25 Dec 2008 06:01:04 +0000 http://blogs.discovermagazine.com/cosmicvariance/2007/12/03/arrow-of-time-faq/#comment-54531 [...] by F. Scott Fitzgerald. As you all know, it’s a story based on the device of incompatible arrows of time: Benjamin is born old and ages backwards into youth (physically, not mentally), while the rest of [...] […] by F. Scott Fitzgerald. As you all know, it’s a story based on the device of incompatible arrows of time: Benjamin is born old and ages backwards into youth (physically, not mentally), while the rest of […]

]]> By: La Nature du Temps « Dr. Goulu http://blogs.discovermagazine.com/cosmicvariance/2007/12/03/arrow-of-time-faq/#comment-54311 La Nature du Temps « Dr. Goulu Wed, 24 Dec 2008 11:01:04 +0000 http://blogs.discovermagazine.com/cosmicvariance/2007/12/03/arrow-of-time-faq/#comment-54311 [...] Variance” grâce auquel j’ai découvert ce concours et où se trouve notamment une FAQ sur la flêche du temps. Dans son essai, il What if Time Really Exists? il propose de considérer tout de même le temps [...] […] Variance” grâce auquel j’ai découvert ce concours et où se trouve notamment une FAQ sur la flêche du temps. Dans son essai, il What if Time Really Exists? il propose de considérer tout de même le temps […]

]]> By: What if Time Really Exists? | Cosmic Variance | Discover Magazine http://blogs.discovermagazine.com/cosmicvariance/2007/12/03/arrow-of-time-faq/#comment-49233 What if Time Really Exists? | Cosmic Variance | Discover Magazine Mon, 24 Nov 2008 18:01:14 +0000 http://blogs.discovermagazine.com/cosmicvariance/2007/12/03/arrow-of-time-faq/#comment-49233 [...] — you can actually reach some sweeping conclusions. The fulcrum, of course, is the observed arrow of time in our local universe. When thinking about the low-entropy conditions near the Big Bang, we tend to [...] […] — you can actually reach some sweeping conclusions. The fulcrum, of course, is the observed arrow of time in our local universe. When thinking about the low-entropy conditions near the Big Bang, we tend to […]

]]> By: A Brief Walk Down Stoney Street | Screaming Planet http://blogs.discovermagazine.com/cosmicvariance/2007/12/03/arrow-of-time-faq/#comment-34555 A Brief Walk Down Stoney Street | Screaming Planet Sun, 19 Oct 2008 16:59:24 +0000 http://blogs.discovermagazine.com/cosmicvariance/2007/12/03/arrow-of-time-faq/#comment-34555 [...] It’s like reversing the arrow of time. [...] […] It’s like reversing the arrow of time. […]

]]> By: It’s about time…. « Shores of the Dirac Sea http://blogs.discovermagazine.com/cosmicvariance/2007/12/03/arrow-of-time-faq/#comment-34554 It’s about time…. « Shores of the Dirac Sea Mon, 15 Sep 2008 00:04:54 +0000 http://blogs.discovermagazine.com/cosmicvariance/2007/12/03/arrow-of-time-faq/#comment-34554 [...] future. You know what I mean. Eddington gave it a fancy name. He called it the arrow of time. Some people want to talk about it a lot. I just know it’s there. It is the arrow that kills you in the [...] […] future. You know what I mean. Eddington gave it a fancy name. He called it the arrow of time. Some people want to talk about it a lot. I just know it’s there. It is the arrow that kills you in the […]

]]> By: The Lopsided Universe | Cosmic Variance http://blogs.discovermagazine.com/cosmicvariance/2007/12/03/arrow-of-time-faq/#comment-34553 The Lopsided Universe | Cosmic Variance Sun, 08 Jun 2008 20:49:18 +0000 http://blogs.discovermagazine.com/cosmicvariance/2007/12/03/arrow-of-time-faq/#comment-34553 [...] to impress upon people that the origin of the entropy gradient in our everyday environment could be traced back to the Big Bang, and that conventional ideas about inflation did not provide straightforward answers to the [...] […] to impress upon people that the origin of the entropy gradient in our everyday environment could be traced back to the Big Bang, and that conventional ideas about inflation did not provide straightforward answers to the […]

]]> By: The Overhyped Cosmological Arrow of Time « The truth makes me fret. http://blogs.discovermagazine.com/cosmicvariance/2007/12/03/arrow-of-time-faq/#comment-34420 The Overhyped Cosmological Arrow of Time « The truth makes me fret. Sun, 23 Dec 2007 16:26:03 +0000 http://blogs.discovermagazine.com/cosmicvariance/2007/12/03/arrow-of-time-faq/#comment-34420 [...] Overhyped Cosmological Arrow of Time Something had been bugging me about Sean Carroll’s Arrow of Time FAQ, and it was probably because his answers were too pat. For example, after acknowledging that the [...] […] Overhyped Cosmological Arrow of Time Something had been bugging me about Sean Carroll’s Arrow of Time FAQ, and it was probably because his answers were too pat. For example, after acknowledging that the […]

]]> By: Sandy http://blogs.discovermagazine.com/cosmicvariance/2007/12/03/arrow-of-time-faq/#comment-34552 Sandy Fri, 21 Dec 2007 22:32:50 +0000 http://blogs.discovermagazine.com/cosmicvariance/2007/12/03/arrow-of-time-faq/#comment-34552 I like to think about the difference between things and events. This is a difficult exercise because although they are clearly different, they are both configurations of matter/energy. Perhaps it is just rhetorical - an event is merely defined by its time element (something happened) instead of its space element (something is). Perceiving an event is us catching the universe in the act of reconfiguring (change). The wearing away of rock, is that an event? Basically it is. So our concept of an event is just us noticing change - consciousness (an event) tracking change (an event. Our brains are an apparatus for the perception of time. Time may or may not exist as a constant background, but the thing that we call time (change) is an important thing to track. Our senses alone could not track change, our brains do by using memory. Can someone tell me what time does in equations describing entanglement? I like to think about the difference between things and events. This is a difficult exercise because although they are clearly different, they are both configurations of matter/energy. Perhaps it is just rhetorical - an event is merely defined by its time element (something happened) instead of its space element (something is). Perceiving an event is us catching the universe in the act of reconfiguring (change). The wearing away of rock, is that an event? Basically it is. So our concept of an event is just us noticing change - consciousness (an event) tracking change (an event. Our brains are an apparatus for the perception of time. Time may or may not exist as a constant background, but the thing that we call time (change) is an important thing to track. Our senses alone could not track change, our brains do by using memory.

Can someone tell me what time does in equations describing entanglement?

]]> By: Sandy http://blogs.discovermagazine.com/cosmicvariance/2007/12/03/arrow-of-time-faq/#comment-34424 Sandy Mon, 17 Dec 2007 02:53:29 +0000 http://blogs.discovermagazine.com/cosmicvariance/2007/12/03/arrow-of-time-faq/#comment-34424 John, That the present becomes the past is not the same as being able to affect the current past while in the current present....But it was fun to think about the duration of the present. I realized that music, which is an art of time not space, gives me my best shot at comprehending (feeling) the present as a moving target. Instead of an arrow from past to future, there is the present in the middle with an arrow going to the past and an arrow going to the future. The present is moving both ways. John,
That the present becomes the past is not the same as being able to affect the current past while in the current present….But it was fun to think about the duration of the present. I realized that music, which is an art of time not space, gives me my best shot at comprehending (feeling) the present as a moving target. Instead of an arrow from past to future, there is the present in the middle with an arrow going to the past and an arrow going to the future. The present is moving both ways.

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