Csikszentmihalyi (1990), Flow: The Psychology of Optimal Experience — three conditions: clear proximal goals + immediate feedback + balance between perceived challenge and skill

Claim: Mihaly Csikszentmihalyi (1990), Flow: The Psychology of Optimal Experience (and earlier 1975 work). Flow is a state of complete absorption with loss of self-consciousness and distorted time sense. Three conditions: (1) clear proximal goals; (2) immediate feedback; (3) balance between perceived challenge and perceived skill. Standard nine-dimension articulation: Nakamura & Csikszentmihalyi (2002).

Source: Csikszentmihalyi (1990) book.

Confidence: Verified for the theory; Industry-consensus that simple input → output tools reliably induce full flow. Most tool interactions are brief and may produce mild absorption rather than deep flow.

Why this matters for Candid: Foundation for design discipline. The robust components are clear goals + immediate feedback (engineer-able); the challenge-skill balance is the contested component (Løvoll & Vittersø (2014), Social Indicators Research — neither flow indicator peaked at balance; supports an IMBALANCE model; Engeser-Rheinberg 2008 also found balance not always optimal). Anchors R2 — Engineer the robust flow components (clear-goal + immediate-feedback); do NOT promise "deep flow" for short tool sessions; the challenge-skill balance is shaky and contested.