Wielding a black Magic Marker, he charted the big bang of channel expansion and audience fragmentation that has propelled television history so far, from the age of the three networks, each with a mass audience, to the hundreds of cable channels, each serving a niche audience twenty-four-hour news, food, sports, weather, music and on to the dawning age of Internet video, bringing channels by the tens of thousands.

NEWYORKER: Streaming Dreams