The document discusses different layers of the internet, including the deep web and dark net. The deep web contains private or restricted content that is not accessible through standard search engines but can still be accessed through regular browsers. The dark net exists on encrypted networks like Tor and allows anonymous transactions, containing black markets for drugs, guns, and other illegal goods. While the deep web and dark net enable privacy and anonymity, they also facilitate serious crimes and raise questions about whether these private parts of the internet should exist.