Television Does Not Satisfy, or Else Why Would the Viewer

Essay

Television does not satisfy, or else why would the viewer continue to watch hour after hour, day after day? "The measure of health," writes Lawrence Kubie, "is flexibility… and especially the freedom to cease when sated." But the television viewer can never be sated with his television experiences-they do not provide the true nourishment that satiation requires-and thus he finds that he cannot stop watching.
-Marie Winn
-What is the paragraph's topic sentence? Does Winn state her opinion about a certain issue? Is this opinion debatable?