On 10/27/2022 4:16 PM, John Clark wrote:
On Thu, Oct 27, 2022 at 6:55 PM Bruce Kellett <[email protected]>
wrote:
/> You can delay the choice as to whether or not to utilize the
information about which slit the particle went through until long
after that particle has hit the screen/
No you cannot, you must perform the quantum erasure after the particle
passes through the slits but before it hits the screen,although that
time can be as long as you want it to be, you just have to increase
the distance between the slits in the screen.
/> and formed its permanent image on the screen./
Once a large-scale macro change has been made, such as would happen
when the particle hits the screen, it would be virtually impossible to
get all the trillions of particles in the screen to become identical
again and cause the two universes to merge back together again.
/> It cannot decide whether or not to interfere with itself to
produce an interference pattern at that time -- the decision about
where to hit the screen has long since been made./
Huh? You don't get to decide where the particle hits the screen.
/> I cannot recommend strongly enough that you read and study the
article by Carroll -- it might rid you of a number of
misconceptions that you have built up over time:/
Misconceptions that apparently you are unable to clearlystate. I am
very well acquainted with Carroll's blog and I'll wager I've read more
stuff by Carroll than you have.
Whether you've read it or not, you have not understood the one on
delayed-choice quantum erasure. Notice that he lets the particles hit
the screen and then does the erasure by picking out the left-spin v. the
right-spin.
Brent
John K Clark See what's on my new list at Extropolis
<https://groups.google.com/g/extropolis>
cbr
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