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>>If your brain and mine are identical then there is no way to
>>determine if they've switched positions or not, and it wouldn't
>>matter if they did.
>The very language you use betrays the assumption that they
>are not, in fact, identical. To wit, "positions" is plural
It's possible. Grammar is not my strongest point so sometimes I don't write well English. I honestly don't know if "switched positions" or "switched position" is correct.
>and perfect identity would require that they have an identical >position, no?
No. If changing position(s?) of objects has absolutely no detectable effect on anything in the observable universe then the only possible conclusion is that the objects are identical and that position is not an essential aspect of identity. Otherwise the word "identity" becomes a meaningless string of letters.
John K Clark firstname.lastname@example.org
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