"Less is More" — When Ignorance Beats Knowledge
Goldstein & Gigerenzer (2002) discovered something startling: German students outperformed American students when asked which American cities had larger populations. Why? Germans recognized fewer cities, so they could simply pick the one they'd heard of!
🧠 THE PARADOX: If you recognize one option but not the other, pick the recognized one. This works because recognition correlates with importance—and ignorance enables the heuristic.
Which city has the larger population? Try both modes:
"Which is larger: San Antonio or San Diego?"
Important things get mentioned more—in news, conversations, pop culture. Recognition tracks importance because media coverage correlates with significance.
Recognition requires zero calculation. If you recognize A but not B, pick A. No weighing pros and cons, no complex analysis—just one cue, one decision.
Paradoxically, knowing too much disables the heuristic. Experts who recognize everything must rely on noisier judgment—and often perform worse than novices.
Portfolios of recognized stocks sometimes outperform expertly-managed funds. "Invest in what you've heard of" isn't terrible advice in efficient markets.