Entrepreneurship
More Than You Know: Finding Financial Wisdom in Unconventional Places
Michael J. Mauboussin 2008 13 references
Use when making investment decisions, evaluating companies, analyzing market behavior, or applying multidisciplinary mental models to finance — covers process vs. outcome thinking, expected value, behavioral biases, competitive advantage, complex adaptive systems, and fat-tail risk.
investing mental-models behavioral-finance complex-systems competitive-strategy decision-making risk-management
Overview
The Core Framework
- Markets are complex adaptive systems — emergent behavior from many heterogeneous agents, not equilibrium machines
- Process over outcome — in probabilistic domains, judge decisions by method, not short-term results
- Expected value over win rate — magnitude of correctness matters more than frequency (the Babe Ruth Effect)
- Diversity is the engine — market efficiency depends on investor heterogeneity; when diversity collapses, markets break
- Mean reversion is powerful — competitive advantages are shorter than you think; don't overpay for persistence
Quick Lookup
| Situation | Do This | Avoid This |
|---|---|---|
| Evaluating a past decision | Judge by process quality, not outcome | Equating bad outcome with bad decision |
| Sizing a position | Calculate expected value (probability x payoff) | Optimizing for highest win rate |
| Checking portfolio too often | Extend evaluation period to quarterly+ | Daily P&L monitoring (triggers loss aversion) |
| Hearing consensus view | Ask what breaks if everyone believes this | Following the crowd without variant perception |
| Valuing a growth company | Apply base rates: only ~13% sustain high growth | Extrapolating recent growth rates forward |
| Assessing risk | Think exposure (potential impact), not experience (past frequency) | Relying on normal distribution assumptions |
| Evaluating management | Check capital allocation track record first | Weighting charisma over incentive alignment |
Key Diagram: Process vs. Outcome Matrix — the 2x2 that drives all investment decision evaluation
The Key Insight
"Investors must be right on the expectations gap, not just right about the company." — Michael J. Mauboussin, Chapter 1
References
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