in the second sentence of the first paragraph, the authors mention cookbooks, catalogues, and telephone books primarily to
provide examples of printed materials that people commonly refer to for information. These examples illustrate the wide range of sources that individuals may consult, emphasizing that cookbooks, catalogues, and telephone books are just a few examples. By mentioning these specific types of printed materials, the authors aim to highlight the ubiquity of printed information sources in our daily lives, as well as the various purposes they serve.