Film Critic David Thomson on the Evolution of Television

Widely regarded to be among the greatest film critics, David Thomson has written over two dozen books on movies.  But in his latest book, "Television: A Biography," the cinephile surveys the six-decade evolution of television, examining specific episodes, programs and advertisements that highlight the medium's shifting influence on our perception of reality. We talk with Thompson about television’s early role as a family unifier, the effects of ever smaller and more portable screens, and why he thinks, when it comes to TV, “we are not in charge."