As the Internet is 52+ years old, and has reached two-thirds of the human race, it has moved us considerably toward our goals of freedom and prosperity. Yet we are overwhelmed by all the connectivity the Internet is delivering. It’s time to treat connectivity as a thing, with its own science, engineering, dimensions, disruptions, and pathologies. Metcalfe was an Internet pioneer at MIT, Harvard, Xerox Palo Alto Research Center, Stanford, and 3Com and invented Ethernet in 1973.