On Wednesday, October 16, 2019 at 3:49:12 PM UTC-5, Brent wrote:
>
>
>
> On 10/16/2019 8:22 AM, John Clark wrote:
>
> On Tue, Oct 15, 2019 at 8:00 PM Bruce Kellett <[email protected]
> <javascript:>> wrote:
>
> > I*n the delayed choice experiment, the decision whether or not to
>> quantum erase the "which way" information can be made long after the
>> original photons hit the screen and make their marks there.*
>>
>
> No. In the delayed choice experiment the decision on if to erase the
> information about which slit the photon went through can be made after the
> photon passes through the slit, even billions of years after, but it must
> be made while the photon still exists and is inflight not after it hits the
> screen.
>
>
> I thought you read Carroll's book. His example shows in what sense you
> can erase the information after the photon has hit the screen.
>
> Brent
>
This ("you can erase the information after the photon has hit the screen")
can be shown to be possible in Many Worlds theory?
What page of the book? (I'll get a copy and check it out.)
@philipthrift
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