The document discusses how searching the internet works. It defines the internet as a network of connected computers that allow sharing of information with permission. It explains that a web browser is a program that allows searching for and viewing websites, while a search engine program allows searching the entire internet for information. It describes how search engines work by sending crawlers to find and index web pages containing search terms and then displaying the most relevant results using algorithms. It also defines a "filter bubble" as personalized search results based on a user's previous search history.