Three rings (planar circles) are "linked" together, but you'll notice that none is directly linked with another.

• The red ring is "behind" the yellow.
• The yellow ring is "behind" the blue.
• The blue ring is "behind" the red.

Still, while none is intertwined with another, it is impossible to pull them apart.
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Is this a paradox?

Can this really be built?

(In reply to re: String theory by Popstar Dave)

But again, think in three dimensions.   I think it may be possible with rigid rings, where each of the rings are in different planes.  This should be testable with 3 ordinary key rings.

Posted by Larry on 2004-05-29 13:29:02