[Steve]

Lechium, you asked for a logical look at this topic, so that's what I'm doing...

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When did I say "in our physical world"?

You implied that when you asked to answer the question logically.

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Well you cant really have physical evidence of nonphysical world, now can you? =)

Logically, it cannot exist if there is no physical evidence of it existing. I would say it's a matter of faith unless there's documented proof it exists. (and I don't think an individuals account of what they experienced while in a coma is documentable proof).