To my late husband, Antonio Vallone, who inspired and challenged me to explore with him the role of human-computer interaction in the engineering of complex government systems and who learned alongside me as we did so. (Elizabeth Buie)

To my sons, Mark Rennie and Gavin David, who will live in the world we are now creating. (Dianne Murray)

Men standing in opposite hemispheres will converse and deride each other and embrace each other, and understand each other’s language.

Leonardo da Vinci

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