<br><br><div><span class="gmail_quote">On 2/5/06, <b class="gmail_sendername">Jeff Medina</b> <<a href="mailto:analyticphilosophy@gmail.com">analyticphilosophy@gmail.com</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Big Bang physics does not imply the creation or origin of the<br>Universe. According to the theory and the data supporting it, the<br>"initial state" of the Universe simply refers to the earliest point<br>from which data was preserved in a form we are currently capable of
<br>investigating in some way.<br><br>The "initial" state was such that, were there anything preceding that<br>state, information about it would have been lost. A<br>not-quite-accurate, but perhaps intuition-informative analogy:
<br><br>If you store data on your computer, run programs, etc., and then<br>compress and melt down the materials making up your computer at<br>ridiculous temperatures (plasma-level) and cool them off, you won't be<br>able to infer anything about the nature of the resultant substance
<br>prior to the supercompression/heating. Information lost. Not<br>indicative of creation or "the beginning of the Universe".<br><br>Yet a lot of people, mostly general public, but also a surprisingly<br>large number of scientifically educated folks, speak of the Big Bang
<br>theory as if it asserts something about the origin of the Universe.<br><br>We have no evidence about what existed prior to the Big Bang, nor any<br>evidence in favor of " nothing" existing before the Big Bang.
<br><br>If someone with substantial physics knowledge thinks I'm missing<br>something here, please speak up. If not... what a weird, fundamental<br>error for so many scientists and engineers to make in their<br>understanding of BBT. Thoughts on the psychological underpinnings of
<br>such a failing, iff there's something more unusual than "even people<br>of above average intelligence make lots of mistakes / have lots of<br>unquestioned assumptions", are welcome as well.<br><br></blockquote>
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<a href="http://www.princeton.edu/WebMedia/lectures/">http://www.princeton.edu/WebMedia/lectures/</a><br>
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Check out the third lecture by Roger Penrose<br>
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Dirk<br>