<div dir="ltr"><div dir="ltr"><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sat, Apr 18, 2020 at 3:57 AM Giulio Prisco 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">More thoughts:<br>
<br>
Wolfram’s digital physics is fully deterministic, which seems to<br>
exclude free will. But there is computational irreducibility...<br>
<br>
<a href="https://turingchurch.net/computational-irreducibility-in-wolframs-digital-physics-and-free-will-e413e496eb0a" rel="noreferrer" target="_blank">https://turingchurch.net/computational-irreducibility-in-wolframs-digital-physics-and-free-will-e413e496eb0a</a><br><br></blockquote><div><br></div><div>### It took me a few tries but I finally finished reading the article (<a href="https://writings.stephenwolfram.com/2020/04/finally-we-may-have-a-path-to-the-fundamental-theory-of-physics-and-its-beautiful/">https://writings.stephenwolfram.com/2020/04/finally-we-may-have-a-path-to-the-fundamental-theory-of-physics-and-its-beautiful/</a> and some companion texts) a few days ago and my mind is blown. This is the most amazing, fantastic and beautiful vision of physics that I ever encountered. I might be prejudiced here, since I have for a very long time believed that our world is made of simple mathematical objects. About 20 years ago on this list I wrote vaguely about these ideas, about sheaves of mathematical entities splitting and joining to produce the structure of the world, about finding the simplest mathematical object that could give rise to the observable world, about modal realism, this kind of philosophising. In my mind I envisioned graphs or trees of infinitely splitting branches that generate reality but of course I wasn't getting anywhere with my dreams.</div><div><br></div><div>Now Wolfram presents a powerful way of generating mathematical structures that have amazing connections to many aspects of known physics. He and his collaborators found structures that create time, energy, entanglement, and space, all naturally developing without the need to put them in by hand. </div><div><br></div><div>This is amazing and truly beautiful. </div><div><br></div><div>I just wrote "amazing" three times! Amazing!</div><div><br></div><div>Determinism is of course not a problem. Dennett provides a definitive analysis in... I think... "Freedom Evolves" - I am not sure in which one of his books I read it. Determinism is fully compatible with free will, in fact, physical determinism is necessary for free will to exist. But that's a whole another thread.</div><div><br></div><div>Rafal</div></div></div>