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Behavioral Economics & Prospect Theory
The Sunk Cost Fallacy & Irretrievable Loss Auditor
Audit failing projects, bad investments, or unfulfilling commitments. Strip away past unrecoverable time and money using Daniel Kahneman's Prospect Theory to calculate forward expected value.
Quick Scenario Presets
IRRETRIEVABLE SUNK COST
400h / $3.5k
Gone forever regardless of choice
FORWARD EXPECTED VALUE (EV)
Negative EV
Marginal return on future investment
RECOMMENDED ACTION
Cut Losses & Pivot
Optimal economic allocation
The Psychological Reframing Protocol
Mathematical & Behavioral Derivation: Forward Marginal Utility
Classical microeconomics dictates that all rational decisions must be based exclusively on forward marginal expected value, completely ignoring unrecoverable historical costs:
1. Irretrievable Sunk Baseline (Past Capital & Time):
C_sunk = $Spent + (Hours_Spent × Hourly_Opportunity_Rate)
∂(Forward_Outcome) / ∂(C_sunk) ≡ 0 (Sunk cost is mathematically invariant)
2. Forward Expected Value of Continuing (Option A):
EV_continue = P(Success) × V(Success) - [C_future + (H_future × Hourly_Rate)]
3. Forward Expected Value of Reallocating Capital (Option B):
EV_pivot = Expected_Return(Alternative_Projects) - Pivot_Friction
4. Prospect Theory Loss Aversion Penalty (Kahneman & Tversky):
U(Loss) = -λ(-x)^β where λ ≈ 2.25
The emotional pain of realizing a loss is 2.25× more potent than an equivalent gain, triggering irrational gambling behavior.
C_sunk = $Spent + (Hours_Spent × Hourly_Opportunity_Rate)
∂(Forward_Outcome) / ∂(C_sunk) ≡ 0 (Sunk cost is mathematically invariant)
2. Forward Expected Value of Continuing (Option A):
EV_continue = P(Success) × V(Success) - [C_future + (H_future × Hourly_Rate)]
3. Forward Expected Value of Reallocating Capital (Option B):
EV_pivot = Expected_Return(Alternative_Projects) - Pivot_Friction
4. Prospect Theory Loss Aversion Penalty (Kahneman & Tversky):
U(Loss) = -λ(-x)^β where λ ≈ 2.25
The emotional pain of realizing a loss is 2.25× more potent than an equivalent gain, triggering irrational gambling behavior.
5 Fatal Sunk Cost Escalation & Decision Traps
1. The "Waste" Moral Projection Trap
Framing project termination as "wasting" past sacrifices, failing to realize that continuing an uneconomic project wastes future resources as well. The past resources are irretrievably gone regardless of what you do next.
2. The Escalation of Commitment Spiral
Injecting progressively larger tranches of capital, overtime hours, and organizational reputation into a failing project to defend ego and previous public endorsements from being perceived as mistakes.
3. The Invisible Opportunity Cost Blindspot
Measuring only direct cash outlays while ignoring what economists call alternative yield: what world-class projects could your next 250 hours and $5,000 create if deployed into a fresh high-momentum initiative?
4. Prospect Theory Risk-Seeking in the Loss Domain
Daniel Kahneman demonstrated that humans become recklessly risk-seeking when facing a certain loss. Rather than accepting a $10,000 loss, founders gamble another $20,000 hoping for a miracle to "get back to even".
5. Organizational Face-Saving Inertia
In corporate and government bureaucracies, continuing an obviously doomed project is frequently politically safer for middle management than admitting an error and officially writing off the investment.
Frequently Asked Questions
What is the formal economic definition of a sunk cost?
Why does the human brain instinctively escalate commitment to failing projects?
How does Daniel Kahneman and Amos Tversky's Prospect Theory model loss aversion?
What is the Concorde Fallacy and what can we learn from it?
How do elite venture capitalists and poker players eliminate sunk cost bias?
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