Chapter 2 - A Brief History of Talking to Machines
Last updated 2026-07-13. This page hosts the era-by-era cognitive-load notes that accompany Chapter 2, plus the original publications the chapter condenses (the Verification Habit Ch 5 and Ch 7 essays on chatbot lineage and prompt engineering).
Companion activity
Choose one interface shift from this chapter and write what moved from the human to the machine: translation burden, syntax burden, trust burden, feedback latency, or recovery cost.
What this chapter argues
Every interface shift from compilers and batch workflows through assembly, high-level languages, command lines, prompts, dialog, and agents moved cognitive load between the human and the machine. The dialog era is the latest move in that lineage, not a discontinuity. The architecture this book describes is the natural next step: the layer above dialog that organizes how partners actually collaborate over time.
Key sources
Chapter 2's own citations are Willison on the shift from prompting to loop design [D11] and Sweller's cognitive-load work [D17], which supplies the per-era load framework. The full source list lives in the print book's Appendix D.
- D17 - Sweller, J. (1988). Cognitive load during problem solving. doi.org/10.1207/s15516709cog1202_4 - the load framework used to score each interface era. The chapter is explicit that no primary source quantifies per-era allocation at this granularity; the trajectory follows the theory and the per-era discussion.
- D3 - Correa, F. (2024). Dialog Engineering: AI as Your Research Assistant. medium.com/@fabioc - background reading: the essay that named the dialog discipline. Cited in the Introduction and Chapter 8 rather than here.
Primary-source links
- Correa, "Dialog Engineering: AI as Your Research Assistant" (October 2024) - the public artifact this chapter's dialog-era treatment draws on directly.
Chapter contents
- The era table: switches → punch cards → assembly → high-level → command line → prompt → dialog, with cognitive-load score per era.
- What each interface forced the human to learn vs. what it learned about the human.
- Why the dialog era is the first one in which the machine is doing meaningful adaptation back, and what that costs and gains.
- The setup for the four-layer architecture as the natural next-step organization above the dialog interface.