IS Forum
Forum Index Register Members List Events Search Today's Posts Mark Forums Read Help

Go Back   International Skeptics Forum » General Topics » Science, Mathematics, Medicine, and Technology
 


Welcome to the International Skeptics Forum, where we discuss skepticism, critical thinking, the paranormal and science in a friendly but lively way. You are currently viewing the forum as a guest, which means you are missing out on discussing matters that are of interest to you. Please consider registering so you can gain full use of the forum features and interact with other Members. Registration is simple, fast and free! Click here to register today.
Reply
Old Yesterday, 10:05 PM   #1361
Mike Helland
Illuminator
 
Join Date: Nov 2020
Posts: 4,240
Originally Posted by Ziggurat View Post
Which means that your universe isn't homogeneous.

That should have consequences. Have you tried to figure out what they would be?
Yeah. But haven't completely.

The gist is that the manifold implied by the metric is really only good for one observer at r=0 and t=0.

And supposedly that isn't a "habitable" place.

I'm not sure why that is, unless you're making the perfect fluid assumption to get there.

But here's the thing... our current place in spacetime isn't habitable. That's congruent with our experience of physical reality. Something keeps propelling us into the future. In my metric, only at r=0 is the present, which is closer to the future than the other points. It should feel the "arrow of time" more sharply than other events in spacetime.

The idea is that the reality we observe isn't universe-shaped. The reality we observe is shaped like a 4D light cone. We live on the tip.
__________________
I'm not entirely sure what I'm talking about, but based on what little I know, the above seemed like a reasonable thing to say. Thank you in advance for any corrections.
Mike Helland is online now   Quote this post in a PM   Nominate this post for this month's language award Copy a direct link to this post Reply With Quote Back to Top
Old Yesterday, 10:42 PM   #1362
steenkh
Philosopher
 
steenkh's Avatar
 
Join Date: Aug 2002
Location: Denmark
Posts: 7,122
Originally Posted by Mike Helland View Post
Something keeps propelling us into the future.
Yes, itís called thermodynamics.
__________________
Steen

--
Jack of all trades - master of none!
steenkh is offline   Quote this post in a PM   Nominate this post for this month's language award Copy a direct link to this post Reply With Quote Back to Top
Old Yesterday, 11:18 PM   #1363
Roboramma
Penultimate Amazing
 
Join Date: Feb 2005
Location: Shanghai
Posts: 15,490
Originally Posted by steenkh View Post
Yes, itís called thermodynamics.
It's a consequence of thermodynamics that if you start with a low entropy state it will evolve toward a higher entropy state. But I don't think that justifies the statement that thermodynamics is propelling us toward the future.

That's an odd metaphysical claim whose meaning I can't even really parse here.
__________________
"... when people thought the Earth was flat, they were wrong. When people thought the Earth was spherical they were wrong. But if you think that thinking the Earth is spherical is just as wrong as thinking the Earth is flat, then your view is wronger than both of them put together."
Isaac Asimov
Roboramma is offline   Quote this post in a PM   Nominate this post for this month's language award Copy a direct link to this post Reply With Quote Back to Top
Reply

International Skeptics Forum » General Topics » Science, Mathematics, Medicine, and Technology

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -7. The time now is 12:04 AM.
Powered by vBulletin. Copyright ©2000 - 2023, Jelsoft Enterprises Ltd.

This forum began as part of the James Randi Education Foundation (JREF). However, the forum now exists as
an independent entity with no affiliation with or endorsement by the JREF, including the section in reference to "JREF" topics.

Disclaimer: Messages posted in the Forum are solely the opinion of their authors.