“So how do we know if Mom and Dad’s souls move on tonight?” Louise asked. “What’s our metric for success?” Mark picked barbecued chicken strips off his piece of pizza. “A haunting doesn’t necessarily indicate the survival of the human soul after bodily death,” he said, chewing. “There’s the stone tape theory of hauntings, which says that powerful emotional experiences leave permanent traces behind. There’s basic thermodynamics: energy cannot be created or destroyed. So what happens to the energy generated by intense emotional experiences? It has to go somewhere. That’s just science.” Louise
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