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A desiring mind seeks infinity, and finds it today in a proliferation of signals: electromagnetic waves beaming down from the skies, fiber-optic cables emerging from the seas, copper wires woven across the continents. The earthly envelope of land, air and ocean – the realm of organic life, or biosphere – is doubled by a second skin of electronically mediated thought: the noosphere. It’s a vast, pulsating machine: a coded universe grown complex beyond our grasp, yet connected at every pulse to the microscopic mesh of nerve cells in our flesh.

Such is the contemporary circuit of communication. Its existence raises two basic questions. What will be the destiny of this intangible planetary skin? And how does it unfold in our own bodies?

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