I recently saw that this question has been closed as a duplicate, and I couldn't disagree more, but for some reason it has passed review with a Leave Closed outcome.

  • The currently-closed question asks, in essence,

    Could someone [...] explain why the reflections [between two opposite mirrors] curve away instead of meeting at a perspective point within the reflections?

    i.e. entirely a geometric affair.

  • The proposed duplicate asks what would happen if one of the mirrors were 'one-way' and the observation were done from behind it (in a pretty rambling way), involving a completely different set of concepts, and also an invalid premise (the existence of one-way mirrors) that requires careful unthreading in the leading answer that makes up the bulk of the required response, and which is entirely absent from the currently-closed question.

How on Earth are these two duplicates?

  • $\begingroup$ Thank you for pointing this out. I looked at it again and I would have to agree with you. I voted to reopen, though I'm not sure why I voted to close the first time. $\endgroup$
    – auden
    Oct 18, 2016 at 11:32

1 Answer 1


Yep, those are very different questions. Currently both are open.


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