On Saturday, May 5, 2018 at 4:43:15 AM UTC, Brent wrote: > > > > On 5/4/2018 8:01 PM, [email protected] <javascript:> wrote: > > > > On Saturday, May 5, 2018 at 1:47:59 AM UTC, Brent wrote: > > > > On 5/4/2018 5:33 PM, [email protected] wrote: > > > > On Friday, May 4, 2018 at 9:44:49 PM UTC, Brent wrote: > > > > On 5/4/2018 12:07 PM, [email protected] wrote: > > Unfortunately, it is not the case that you can implement absolutely any > unitary transformation in this way. For instance, you cannot implement the > unitary transformation that would reverse a totally decohered event. > > > *If the decoherence was unitary, why can't the process be reversed > statistically, analogous to the case of the classical cooling gas where we > imagine the hugely improbable incoming and absorption of the previously > outgoing IR photons? AG* > > > It's mathematically reversible, but it's not reversible by you or any > combination of powers in this world no matter how magical because this > world is orthogonal to other worlds that contain the information you would > need to reverse it. Which is why I suggested this be called nomologically > irreversible. > > Brent > > > > *I don't buy this argument. Since those other worlds don't exist, one > cannot speak of information lost to them. AG * > > Then you can adopt the "disappearing worlds" interpretation and banish > them. But then you're faced with the CI problem of exactly when and why > they vanish. > > Brent > > > Worlds which disappear must first exist, and the worlds of the MWI, like > the "branches" of the SWE, don't exist. > > > Then you need some rule as to why they don't exist. They are all the same > in the SWE solutions. >
*Those who affirm the existence of those Worlds have the burden of proof. Instead, they simply assert that all outcomes must be manifested. Where did that assumption come from? Tegmark in steroids? If we had a rule for their non existence, or equivalently, a rule which tells us what outcome will occur, we'd likely be running amok of Bell's theorem. AG* > > ... -- 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 [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
