Hooked — Four-Stage Framework, Scope and Habit-Testing Limits

Academy synthesis: useful repeat practice and delayed independent performance; optional cues and learner-owned records. Engagement is not proof of learning.

Practitioner product-design model, illustrated with historical interviews and cases.

Eyal's four-stage cycle links a cue, feasible action, variable reward and investment in future value. He limits its relevance to recurring behavior and describes identify/codify/modify testing; the five-percent devotee suggestion is a heuristic, not validated Academy guidance.

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Introduction; chapters1–8; especially9–17,97–109,128–131

Attribution checked against full188-sheet supplied copy and50visuals. Verification does not endorse all empirical or causal claims.