1. The 4th Industrial Revolution: An Introduction; 2. The Human-Machine Interface: Emergent Technologies in Everyday Life; 3. Digital Economies: From Gig Work to Cryptocurrencies; 4. Communicating Threats: Security Breaches, Language Injustices, Civil Subjugation, and Other Dangers; 5. Systems of Power: Regulating Information and Communication; 6. Conclusion: The Role of Applied Linguistics.