Normalcy Bias
Assuming tomorrow will look like yesterday
The mind assumes continuity. Tomorrow will resemble today. Slow decay feels safe. Warning signs are discounted. Change feels unlikely until it becomes unavoidable.
Mechanism
Stability is the default assumption. The mind underweights the possibility of discontinuous change, especially when current conditions have persisted for extended periods.
Early Signals
Typical Outcomes
Powers These Traps
Examples in Practice
Markets
Pre-crisis complacencyInvestors assume low volatility will persist because 'it's been stable for years'—then are shocked by sudden market dislocation.
Climate
Adaptation delayCoastal communities underinvest in flood protection because 'we've never flooded before'—until unprecedented storm hits.
Technology
Disruption blindnessIncumbent company dismisses emerging competitor because 'our customers are loyal' and 'we've always dominated'—until market share collapses.
Why This Bias Persists
Continuity is cognitively cheap. Imagining discontinuity requires effort and triggers anxiety. The mind prefers familiar patterns.