On 11/5/2019 8:10 PM, Alan Grayson wrote:


On Tuesday, November 5, 2019 at 5:24:35 PM UTC-7, Brent wrote:



    On 11/5/2019 2:49 PM, Alan Grayson wrote:
    >
    > That's what I don't understand. If there's no detector focused
    on, or
    > watching the slits,
    > how can which-way information exist? All we observe is loss of
    > interference without
    > which-way information. What can we conclude from this? AG

    That we don't have to possess the which-way information.  It's enough
    that it exists.

    Brent


Yes, that's how I revised my understanding of the double slit experiment. BUT Bruce says we DO get which-way information. How is that possible just based on temperature? AG

He didn't say we got it.  He said it was possible to get it. Just as watching a glowing body allows you to know its trajectory.

Brent

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