Chapter 3.4 Notes: Networks, Internet, Web Evolution, and Security

Chapter context and foundational themes

• The transcript frames networks and the Internet as the backbone and invisible infrastructure of modern life, essential for how we access information, create, and share data in a distributed digital society.
• Central questions: Is Tim Berners-Lee’s original vision of a free, open, universally accessible Web being realized, or have technical realities and commercial pressures altered it?
• The technical deep dive aims to cut through jargon, explain how networks are built and communicate over large distances, and connect these ideas to social and ethical dilemmas.
• Starting with a relatable problem: network failure (e.g., Wi‑Fi down at school) reveals our dependence on secure, reliable networks.
• The lecture emphasizes the social & ethical implications of connectivity, including access, privacy, and governance.