Karlberg set up a one-way mirror in a storefront over a year-long period, taking pictures of strangers as they looked at themselves in the mirror.

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Toy designers Worlds Apart have a lab with a one-way mirror at their Cornwall headquarters that allows them to observe how children interact with toys they are developing.

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There was no recording of the interrogation, no one else was in the room or watching from a two-way mirror, and Saldate said he threw away his notes shortly after completing his report.

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For one thing, mirror neurons are good for representing actions--which, in an abstract way, is what sentences do.

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