Here's why:
* Directly points to relevant pages: The index lists keywords and page numbers where those keywords are discussed in the book.
* Organized for easy navigation: The index is alphabetically organized, making it simple to find the topic you're interested in.
* Provides an overview of coverage: The number of pages dedicated to a topic within the index gives you a general sense of its prominence in the book.
Additional Tips:
* Check the table of contents: If the index is missing or not very detailed, the table of contents can give you a broader overview of the book's structure and chapters that might address your topic.
* Skim the preface or introduction: These sections often provide an overview of the book's main themes and arguments, potentially revealing the extent of coverage on your specific topic.
Remember, these methods provide a quick assessment. For a more thorough understanding of the book's content, you may need to read relevant chapters or sections in detail.