On Friday, September 12, 2025 at 6:29:14 AM UTC-6 John Clark wrote:
On Thu, Sep 11, 2025 at 3:39 PM Alan Grayson <agrays...@gmail.com> wrote: *> I watched the first video and had a discussion with Brent about his alleged related solution, but I was finally turned off when he used the slingshot method for turnaround, but apparently couldn't explain how the traveling twin could start his adventure without accelerating. * *Regardless of when the adventure began, or even if it had a beginning, the experiment can only start when the two clocks have been synchronized, and for 2 spaceships that are moving relative to each other that can only happen at the instant when they both fly right next to each other. That's because the one and only time every observer agrees that two events were simultaneous is when they occurred at the same location in space. * *And after you accelerate, which takes time to do, you see things with a different viewpoint, but Special Relativity allows you to know what things would look like from any observer's viewpoint, and there is no law of physics that says you can't do that instantaneously. * *> how about explaining an issue I brought up on another thread; namely, when polarizing a photon, how can you assert that S's equation implies that every polarization must occur in some world using the MWI, when the equation is nowhere in sight to predict anything about polarization measurements?* *We've been over this same ground before, many many times. * *And apparently you still don't understand my question. In any experiment, there are several, many, or hugely many possible results. The MWI claims that they all must happen, and that's why the interpretation invokes "many worlds". When I ask the source of this claim, you've repeatedly pointed to S's equation informing you of that. But in the polarizer experiment, there is no such equation to appeal to. So how can your claim be valid in this case? AG * *Everything is a quantum mechanical object, and that includes massive things like a polarizer and things that are not so massive like a photon. Bell's inequality is violated therefore, unless you take Superdeterminism seriously (which I do not) the universe cannot be realistic, deterministic and local. At least one of those three things must be wrong. Many Worlds says the universe is NOT realistic, an unmeasured thing does not exist in one and only one quantum State. Therefore before the experiment the photon was polarized at every angle allowed by the laws of physics and the polarizer was set at every possible rotational angle allowed by the laws of physics. * *And the scientist doing the experiment is also a quantum object, and I'm sure you know what Many Worlds says about that, or at least you should given it how often we've discussed it. * *John K Clark See what's on my new list at Extropolis <https://groups.google.com/g/extropolis>* *3'~* -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to everything-list+unsubscr...@googlegroups.com. To view this discussion visit https://groups.google.com/d/msgid/everything-list/b9ee6c2c-06d3-4f6f-abf9-dc48c57a40b7n%40googlegroups.com.
