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But, as she herself admits, Maria could have been familiar with the hospital equipment and procedures.

And coincidentally familiar with a tennis shoe on a third floor ledge on the opposite side of the building. Doesn't add up. And if it's a physical process why don't all similarly situated patients have them? I believe that was a conclusion of a study of cardio patients whene only18% had an nde experience (going from memory.

Something we don't understand is going on here.

The key elements in human thinking are not numbers but labels of fuzzy sets. -- L. Zadeh

Which explains a lot.