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Old July 30, 2008, 10:18 AM   #34
rsgraebert
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Join Date: April 29, 2008
Location: Northern Ohio
Posts: 201
There's a possibility we're getting our legs pulled by these dual-focusing fools. However, no one seems to be arguing that one eye can focus at two distances simultaneously. Perhaps it can shift focus fairly quickly and form the illusion, but optical physics preempts the possibility of genuine dual focus with a single eye.

There is also a possibility that they have learned how to temporarily dissociate their stereo vision such that one eye focuses on the sight, and the other on the target. I would not be so quick to dismiss that as impossible, but rather inconceivable to the uninitiated. The Princess Bride comes to mind..."You keep using that word. I do not think it means what you think it does."
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Last edited by rsgraebert; July 30, 2008 at 10:19 AM. Reason: Clarity
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