Kahneman & Tversky (1982) discovered we judge emotional intensity by how easily we can mentally simulate "what might have been." Miss a flight by 5 minutes? Worse than missing by 30 minutes—even though the outcome is identical! Why? Because "if only I'd left 5 minutes earlier" is easy to imagine. The closer the miss, the more vivid the alternative, the stronger the regret.
The Airport Scenario
✈️
Two travelers, Mr. Adams and Mr. Baker, are stuck in the same traffic jam on the way to the airport. Both miss their flights.
Mr. Adams arrives at the gate and learns his flight left 30 minutes ago.
Mr. Baker arrives and learns his flight left 5 minutes ago (it was delayed 25 minutes).
Who do you think is more upset?
👔
Mr. Adams
Missed by 30 minutes
👨💼
Mr. Baker
Missed by 5 minutes
96%
of people say Mr. Baker (the 5-minute miss) is more upset
Why? The ease of mental simulation:
"If only I'd left 5 minutes earlier..."
✓ Easy to imagine
"If only I'd left 30 minutes earlier..."
✗ Hard to imagine—that's a different morning
The Lottery Ticket
🎟️
Two people sold lottery tickets that later won $1 million.
Person A sold their ticket 2 weeks ago.
Person B sold their ticket yesterday.
Who experiences more regret?
😐
Person A
Sold 2 weeks ago
😩
Person B
Sold yesterday
Person B
"I almost had it!" The recent sale is easier to mentally undo
The "counterfactual world" where you still own the ticket:
Yesterday: "What if I hadn't sold it..."
✓ Almost real—just 24 hours ago
2 weeks ago: "What if I hadn't sold it..."
✗ Distant past—life has moved on
The Tragic Accident
🚗
Two people are killed in car accidents on their way to work.
Driver A was taking their usual route.
Driver B was taking an unusual route (they decided to try a different way that morning).
Which family will experience more counterfactual thinking ("if only...")?
🛣️
Driver A's Family
Usual route
🔀
Driver B's Family
Unusual route
Driver B's Family
Unusual events are easier to mentally "undo"
Norm Theory: we mentally replace exceptions with norms
"If only they'd taken their normal route..."
✓ The "normal" alternative is vivid
"If only they'd taken a different route..."
✗ Which one? The normal was this route.
The Simulation Heuristic Explained
3/3
Scenarios where "near miss" = more regret
Easy
= Stronger emotion
∞
Applications in daily life
The Core Insight
We don't judge outcomes by what happened—we judge them by how easily we can imagine alternatives. The more "mutable" the scenario (easy to mentally change), the stronger our emotional reaction.
Applications:
Near-miss lottery tickets feel like losses (not non-wins)
"Bronze medalists are happier than silver" (silver → "almost gold!")
Unusual actions before tragedy increase blame and regret
Anxious people overuse this heuristic (everything feels nearly bad)
Why This Matters
Bronze vs. Silver: Research shows bronze medalists are often happier than silver medalists! Silver → "I almost won gold." Bronze → "I almost got nothing."
Anxiety: Anxious people overuse the simulation heuristic, imagining worst-case scenarios too vividly, making them seem probable.
Blame & Causation: We assign more blame when the cause was unusual ("Why did you take THAT route?!") because it's easier to imagine the normal alternative.