It is the definitive expression of our collective wealth to act in the face of death and disease and conflict that is preventable.

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Facial-recognition systems work only if the photograph is taken with proper lighting and an especially bland expression on the face.

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First, the Facial Action Coding System, the first exhaustive analysis of all the expressions the face is capable of through detailed examination of all the possible ways that the muscles of the face can move and create expression.

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