<div dir="ltr"><div>I agree with what Ron Garrett explains here, which is that entanglement is merely measurement: <a href="https://www.youtube.com/watch?v=dEaecUuEqfc">https://www.youtube.com/watch?v=dEaecUuEqfc</a></div><div><br></div><div>That is to say, they have the same mathematical properties in the theory. Accordingly, the mystery of consistency as observed in entanglement when we see consistency in measurements across space is no less (or more) than the mystery of consistency across time when we measure the same thing more than once. </div><div><br></div><div>Jason</div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Mon, Sep 15, 2025 at 11:52 AM BillK 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"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, 15 Sept 2025 at 07:09, scerir via extropy-chat <<a href="mailto:extropy-chat@lists.extropy.org" target="_blank">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"><u></u>
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<p>Are there physical phenomena out of space.time? It seems so: <a href="https://www.edge.org/response-detail/26790" target="_blank">https://www.edge.org/response-detail/26790</a></p></div></blockquote><div><span class="gmail_default" style="font-family:arial,sans-serif;font-size:small;color:rgb(0,0,0)">------------------------------------------</span></div></div><div class="gmail_quote"><div><br></div><div><span class="gmail_default" style="font-family:arial,sans-serif;font-size:small;color:rgb(0,0,0)"><br></span></div><div><span class="gmail_default" style="font-family:arial,sans-serif;font-size:small;color:rgb(0,0,0)">GPT-5 agrees that entanglement is an unsolved problem.</span></div><div><div style="font-family:arial,sans-serif;font-size:small;color:rgb(0,0,0)">Sadly, we don't know everything yet. :)</div><div style="font-family:arial,sans-serif;font-size:small;color:rgb(0,0,0)">BillK</div><div style="font-family:arial,sans-serif;font-size:small;color:rgb(0,0,0)"><br></div><div style="font-family:arial,sans-serif;font-size:small;color:rgb(0,0,0)">GPT-5 -</div><div style="font-family:arial,sans-serif;font-size:small;color:rgb(0,0,0)"><p>That’s the natural hunch — if entanglement correlations seem to “jump” across space instantly, maybe they bypass spacetime altogether. But here’s how it plays out:</p>
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<h3>What entanglement does <i>not</i> do</h3>
<ul><li>
<p><b>No faster-than-light signals.</b> Entanglement doesn’t let you send information instantly. When you measure one particle, you can’t <i>control</i> the outcome, only see it. The matching result on the other side only makes sense when both parties compare notes — and that comparison travels at light speed or less.</p>
</li><li>
<p><b>No causal influence across space.</b> Physicists emphasize that nothing <i>travels</i> between the particles in measurement. The correlations are just there, baked in by quantum mechanics.</p>
</li></ul>
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<h3>So does it happen “outside” spacetime?</h3>
<ul><li>
<p><b>In one sense, yes.</b><br>
The correlations don’t respect spacetime locality. Einstein called it <i>“spooky action at a distance”</i> precisely because spacetime separation didn’t seem to matter. That’s why some researchers say entanglement hints at a deeper layer of reality where “distance” doesn’t mean anything.</p>
</li><li>
<p><b>In another sense, no.</b><br>
Every actual experiment still happens in spacetime. You prepare particles here, measure them there, record outcomes on clocks. The <i>framework</i> of the experiment is spacetime, even if the correlations don’t fit neatly inside it.</p>
</li></ul>
<hr>
<h3>How modern physics reconciles it</h3>
<ul><li>
<p><b>Quantum field theory (QFT):</b> Still uses spacetime as the arena, but accepts nonlocal correlations as a feature of quantum states.</p>
</li><li>
<p><b>Holographic principle / AdS-CFT:</b> Suggests spacetime itself <i>emerges</i> from patterns of entanglement. In this picture, entanglement isn’t happening “outside” spacetime — it’s the scaffolding that <i>creates</i> spacetime in the first place.</p>
</li><li>
<p><b>ER=EPR conjecture:</b> Wild but influential idea — entangled particles might be connected by tiny wormholes (Einstein-Rosen bridges). That would tuck “instantaneous” entanglement back into spacetime geometry in a strange way.</p>
</li></ul>
<hr>
<h3>The punchline</h3>
<p>Entanglement doesn’t <i>break</i> spacetime, but it does suggest spacetime may not be the deepest story. It’s less “outside spacetime” and more “underneath spacetime” — the correlations point to a level where “distance” and “duration” don’t yet exist in the way we’re used to.</p><hr></div><div style="font-family:arial,sans-serif;font-size:small;color:rgb(0,0,0)"><br></div><br></div></div></div>
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