Traces of the Past

In the last paragraph of Lynn Spigel’s “Installing the Television Set,” Spigel quotes historian Carlo Ginzburg, who writes: “Reality is opaque; but there are certain points—clues, signs—which allow us to decipher it.”  Why do you think Spigel closes her analysis of post-war television’s role in American domestic spaces with this quote?  How does she describe her historical approach/methodology? What types of “traces” of the past does she examine in this essay and how does she use them?  Do you agree with her approach to history?