There is no one definitive answer to this question, as the Google Wayback Machine can be used in a variety of ways. For example, you could use it to view archived versions of websites that you have visited in the past, or to view archived versions of websites that have been removed from Google's search results. Additionally, you could use it to view archived versions of websites that have been lost in Google's index, or to view archived versions of websites that have been changed or removed from Google's search results.