is ambiguous, however. It may also mean "imaginable" and in this sense it is not equivalent to "logically possible." A thousand-sided polygon is surely logically possible; I cannot imagine one (form the image of one); what I am tempted to call my mental image of a polygon with 1,000 sides is no different from that of a polygon with 999 sides, but I would not want to deny categorically that somebody, somewhere, can form the image of a thousand-sided polygon. People's powers of imagination vary. What imaginable depends on. who is doing the imagining. You may be able to imagine things that I cannot. What is logically possible does not have this variability. Whether I can imagine it or not, a thousand-sided polygon, an animal that's a cross between a walrus and a wasp, and a color different from any we have ever seen, are all logically possible; need not stop to as whether we can imagine them. Something can be logically possible and yet unimaginable (by you or by me, or even by everybody) because of the limitation of our powers of imagination.