<div dir="ltr">I've never heard of Jacob Barandes, but I know who Max Tegmark is, and Max's book is significantly more convincing that Barandes's opinion column.</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Nov 14, 2023 at 5:55 PM Keith Henson via extropy-chat <<a href="mailto:extropy-chat@lists.extropy.org">extropy-chat@lists.extropy.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Simulation is another way to get to something like the multiverse.<br>
<br>
We might be living in one, or simulations could lie in our future as<br>
we build enough computer power to simulate the past. See the posting<br>
long ago where I laid this rap on Hans Maravec.<br>
<br>
Simulations allow something subjectively like time travel. If you<br>
checkpoint the simulation from time to time, you can start a new<br>
instance from the checkpoint and enter the new simulation.<br>
<br>
This would surely use a lot of computer power.<br>
<br>
Keith<br>
<br>
On Tue, Nov 14, 2023 at 4:09 PM BillK via extropy-chat<br>
<<a href="mailto:extropy-chat@lists.extropy.org" target="_blank">extropy-chat@lists.extropy.org</a>> wrote:<br>
><br>
> The multiverse is unscientific nonsense<br>
> It's all mere speculation<br>
><br>
> 13th November 2023<br>
> Jacob Barandes<br>
> Lecturer in Physics, working on the philosophy of physics, at Harvard<br>
> University.<br>
><br>
> <<a href="https://iai.tv/articles/the-multiverse-is-unscientific-nonsense-auid-2668" rel="noreferrer" target="_blank">https://iai.tv/articles/the-multiverse-is-unscientific-nonsense-auid-2668</a>><br>
> Quotes:<br>
> Everyone from physicists like Michio Kaku to Marvel superheroes<br>
> propagate the idea of the multiverse - an infinite set of parallel<br>
> universes. But Jacob Barandes argues that any talk of multiverses is<br>
> nothing more than wild speculation, be it in quantum mechanics or<br>
> cosmology, and that physicists and philosophers are not doing the<br>
> public a service by suggesting otherwise.<br>
><br>
> Readers may have heard that according to a particular interpretation<br>
> of quantum theory, we’re living in a “quantum multiverse” consisting<br>
> of parallel realities that exist “in superposition.” And according to<br>
> certain lines of research coming out of string theory, our observable<br>
> universe is only a small part of a vast “cosmic multiverse” containing<br>
> other regions of space in which the fundamental laws of physics are<br>
> substantially different.<br>
><br>
> These are extraordinary claims, too, but we don’t have extraordinary<br>
> evidence for them – not by a long shot. As such, any talk of<br>
> multiverses – whether the quantum kind or the cosmic kind – is nothing<br>
> more than wild speculation at this point. With all due respect,<br>
> physicists and philosophers are not doing the public a service by<br>
> suggesting otherwise, even when they include caveats.<br>
> -----------------------<br>
><br>
> Quite a long article. It goes into a fair amount of detailed discussion.<br>
><br>
> BillK<br>
><br>
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</blockquote></div>