How to tell if a person is a ghost?

The "rift" is called an Einstein -Rosen Bridge (ERB), theorized by the most gifted physicists of our times. It would look exactly like this in our real 3D world. It explains the living people, without having to resort to any superstitious or mythical entities, like "spirits". A living person, albeit in another time, would fit the bill, it also explains the persons clothing and props (canes, eyeglasses, etc.) that even "spiritual" myth has trouble explaining, and even would explain inanimate "ghosts" (ghost cars, trains, etc.). So why go all myth and superstition and even invent entities, when NATURAL forces and phenomena will do?

Some people say ERBs are only theoretical, that no one has ever seen one. DUHHHH--- Although rare, They have been happening everywhere, all the time over millennia.---Only we have been calling them GHOSTS. What else would people think 1000 or more years ago, not being familiar with Relativistic Physics? This phenomena is what we WOULD see in or near a ERB. This is an example of a traditional superstition used to explain phenomena the current Science had not caught up with yet.----BUT even now, when we CAN explain it, and it shows us proof of theory, se tend to STILL deny it, because of the superstitious traditions associated with it.
Just as our superstitions about lightning delayed study of it and linking it with ELECTRICITY, in times past.
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Dr. NG say: If it walks upright, wears clothes, talks, runs sits or anything else humans do, it's a person. It will always be a living person because there is no such things as ghosts.
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Ricki say: Being able to pass through walls is a clue.
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KLB say: I have wondered that as well, having had visions of spirits clearly from other eras (their clothes). I have had 6 such visions in 30 years and I often wonder if one is a current day spirit, how to tell they are spirit at all? I have researched this somewhat, and 1 thing is consistent - no feet. Look for feet.
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