Book · 12 chapters · Free to read

Make Me Think

Perception-First Design for the Post-Usability Era. Krug’s Don’t Make Me Think is the definitive book about cognitive load. This one covers the other four layers, plus the ethics, the science, and the nightclub where it all started.

Stefan Kovalik · 2026

Download PDF 1.4 MB Download EPUB 622 KB

What this book is

For: designers, PMs, founders, and engineers who suspect their users aren’t behaving the way analytics says.

The angle: a five-layer perception framework grounded in cognitive psychology. Krug owned cognitive load; this covers the other four.

What you take away: a diagnostic vocabulary for why a site feels off, and a generative protocol for designing without guessing.

By Stefan Kovalik. Designer-engineer, 15 years, B.A. cognitive psychology (UCSB). Trademark holder of Perception-First Design™. Builds Cognograph and the /pfd Claude Code skill. San Francisco.

Chapter 1: The Bouncer

The origin story. How three years reading faces at a nightclub door turned into a design methodology. Barback to head of security, 1,500+ faces a night, decisions made in milliseconds.

March 6, 2026 · 12 min read

Chapter 2: They're Already Not Thinking

The autopilot problem. Predictive processing, System 1 vs. System 2, and why most "conversion problems" happen upstream of the checkout flow.

March 7, 2026 · 10 min read

Chapter 3: The Tuning Fork

Autism as analytical social cognition. ADHD as friction sensitivity. Why neurodivergent perception became the diagnostic instrument, and how improv bridged the gap.

March 8, 2026 · 11 min read

Chapter 4: Cognitive Load (Don't Make Me Think)

Cognitive load is the least glamorous layer and the one every other layer depends on. Working memory holds 3–5 things, not 7. Your interface is spending them.

March 9, 2026 · 11 min read

Chapter 5: The 50-Millisecond Verdict

Aesthetic judgment happens before conscious thought. The science of first impressions, why ugly-but-usable loses to beautiful-and-decent, and the perception layer most teams skip.

March 10, 2026 · 12 min read

Chapter 6: The Feeling of Truth

Your brain doesn’t separate “easy to read” from “probably true.” Processing fluency, the science of why consistency compounds trust, and the brand system that tripled revenue.

March 11, 2026 · 11 min read

Chapter 7: The Gap

Perception bias optimization. The System 1/System 2 gap, Nisbett & Wilson (1977), and why a single tagline shift tripled revenue.

March 12, 2026 · 14 min read

Chapter 8: The Trail

Decision architecture. How you structure choices determines what people choose. The trail from first impression to final action, and why the path matters more than the destination.

March 13, 2026 · 10 min read

Chapter 9: Feel, Unpack, Diagnose, Prescribe

The four-step diagnostic process behind every Perception-First Design project. How to read a website the way a physician reads symptoms.

March 20, 2026 · 18 min read

Chapter 10: Music, Humor, Stories

Three tools that change how people perceive anything, ranked by power. What improv class taught an autistic designer about reading rooms, building experiences, and why everything multiplies by zero if the user isn’t listening.

March 21, 2026 · 13 min read

Chapter 11: The Oath

If you’re designing for perception, you’re engineering thoughts and emotions. Three ethical tests every design decision should pass, why dark patterns are cheap laughs, and the time I turned down Fortune 500 money.

March 22, 2026 · 12 min read

Chapter 12: What I Don’t Know Yet

Every framework is a flashlight. The blind spots, cultural limits, open questions, and honest edges of Perception-First Design. A methodology that doesn’t name its own limits isn’t confident, it’s careless.

March 23, 2026 · 9 min read

Foundations

Make Me Think is built on roughly a hundred peer-reviewed citations. The load-bearing ones: Cowan (working memory, 3–5 chunks), Lavie (selective attention), Lindgaard, Tractinsky, Kurosu & Kashimura (the 50ms aesthetic verdict), Reber & Schwarz and Alter & Oppenheimer (processing fluency = perceived truth), Damasio (somatic markers), LeDoux (emotional response), Kahneman and Nisbett & Wilson (System 1/2, autopilot), Clark (predictive processing), Sweller (cognitive load), Lang (limited capacity model), Spence (cross-modal coherence), Hertwig & Erev (description vs. experience), Trope & Liberman (construal-level theory), and Seckler et al. (visual coherence as trust).

Full citation list at github.com/skovalik/perception-first-design.

Methodology applied

The framework, run on real artifacts.

Audit · 12 min

The Multiplier

PFD applied to 108 days of solo Claude Code output. Method, math, data sources disclosed. Calibrated against a real 2026 peer baseline.

Essay · 18 min

You Wouldn’t Vibe Code a Car

PFD applied to AI-assisted dev rhetoric. Processing fluency, the “pivot to video,” and the credibility gap. 20+ academic citations.

The work this book belongs to

Perception-First Design is the methodology. Open source, dual-licensed (CC BY-SA 4.0 + MIT), v3.6. Corpus-driven evals engine, 26 heuristics, seven worked examples calibrated 18–92/100. Trademark filed.
Cognograph is the spatial AI workflow canvas. Designed and built solo. Electron + React 18 + TypeScript + React Flow + Three.js + Y.js CRDT for multiplayer. Multi-provider across Anthropic, OpenAI, Gemini, OpenRouter, and local Ollama. AGPL-3.0 with Defensive Patent Pledge. Four provisional patents.
Forge is the automated PFD audit. Web app and Claude Code skill. Same five-layer protocol as the book, runnable on a URL.
Make Me Think is this book. Twelve chapters, all live and free to read. Counterpoint to Krug.