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Sunday Brunch Cosmology Vid-Blog Repast

 
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jabailo



Joined: 20 Mar 2006
Posts: 1273
Location: Kent (East Hill), WA

PostPosted: Sun Mar 16, 2008 10:50 am    Post subject: Sunday Brunch Cosmology Vid-Blog Repast Reply with quote

Wow...what a stomach full of physics...

Quote:
Science Saturday: Cosmic Bull Session
How much do we really know about the Big Bang? (05:20)
Cosmic inflation and the look of the early universe (12:45)
John’s iconoclastic case against inflation (10:10)
Sean imagines a universe that predates our own (04:27)
Cosmological multiverse theories: are they completely nuts? (13:33)
The Anthropic Principle debate: Sean paves a middle path (05:07)


http://www.bloggingheads.tv/diavlogs/9433?in=00:00:30
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brian-hansen
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Joined: 17 Mar 2006
Posts: 712
Location: Oregon

PostPosted: Sun Mar 16, 2008 3:59 pm    Post subject: Reply with quote

Very interesting. I don't know John, but I've "attended"
a lecture series given by Sean fairly recently. He recorded
a series of lectures (10+ hours) on recent advances in
cosmology. It is available from "the Teaching Company"
and I found it at my local library.

As I recall, multi-verses were a very small portion of the
content. Most of the lectures were devoted to providing
background on why dark matter and dark energy were
plausible concepts for explaining astronomical observations.

I recommend it.
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jabailo



Joined: 20 Mar 2006
Posts: 1273
Location: Kent (East Hill), WA

PostPosted: Sun Mar 16, 2008 6:40 pm    Post subject: Reply with quote

Thanks for tip...I just placed a hold on it (must be popular because I'm 33rd in the queue)!

https://catalog.kcls.org/search?/YTeaching+Company+sean+carroll&searchscope=1&SORT=DZ/YTeaching+Company+sean+carroll&searchscope=1&SORT=DZ&extended=0&SUBKEY=Teaching%20Company%20sean%20carroll/1%2C2%2C2%2CB/browse

The blogging heads thing is more of a snack I guess, but I found it amusing because the interviewer has the 'tude of "you guys (cosmologists) keep moving the goal posts" that I tend to argue...
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jabailo



Joined: 20 Mar 2006
Posts: 1273
Location: Kent (East Hill), WA

PostPosted: Sun Mar 16, 2008 6:43 pm    Post subject: Reply with quote

Here's another cosmology hors d'oeuvre:

Jim Elvidge - Are we Living in a Simulation, a Programmed Reality?
http://www.redicecreations.com/radio/2008/03mar/RICR-080313.php

A retelling of this classic from 2001:
http://www.simulation-argument.com/

Quote:

ABSTRACT. This paper argues that at least one of the following propositions is true: (1) the human species is very likely to go extinct before reaching a “posthuman” stage; (2) any posthuman civilization is extremely unlikely to run a significant number of simulations of their evolutionary history (or variations thereof); (3) we are almost certainly living in a computer simulation. It follows that the belief that there is a significant chance that we will one day become posthumans who run ancestor-simulations is false, unless we are currently living in a simulation. A number of other consequences of this result are also discussed.
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