10 min · 11 chaptersNarrated in your voice
Original summary · AI-drafted, human-published · added by Library
What it's about
Rolf Dobelli catalogs roughly a hundred recurring errors in human judgment, from survivorship bias to sunk cost fallacy, drawing on behavioral economics and cognitive psychology. His central claim is that these errors are not occasional lapses but systematic features of a brain built for ancestral survival, not for accurate reasoning about markets, risk, or probability. The book mattered because it translated academic research into short, usable descriptions that professionals in finance, business, and everyday life could recognize in themselves.
Reading plan
Pick a finish date and Genius lays out the days — the plan shows today's target and keeps you honest.
Read together
Start a circle and share the code — everyone sees everyone's honest place in the book. Accountability, not leaderboards.
Who it's for
- Investors and businesspeople who want a vocabulary for the mistakes they keep making with money and strategy - General readers curious about behavioral economics but unwilling to read denser academic treatments - Managers and decision-makers who want quick, memorable checks against overconfidence before committing resources
What’s inside
- 1The Mind Is Not a Truth Machine1 min
Human reasoning evolved to keep ancestors alive long enough to reproduce, not to perceive reality accurately, so our errors are systematic and predictable rather than random.
- 2The Trap of the Survivors1 min
We systematically overestimate the odds of success in any risky pursuit because we only ever see the winners, never the much larger, silent population of people who tried and failed.
- 3Believing Makes It So1 min
People do not process new information to find out what is true; they process it to protect what they already believe, which means evidence rarely changes minds on its own.
- 4The Wisdom and Madness of Crowds1 min
Copying what others do is usually an efficient shortcut to correct behavior, but when everyone is copying everyone else at once, the group can move together into decisions that no individual would have made alone.
- 5Losses Loom Larger Than Gains1 min
Because losing something hurts roughly twice as much as gaining the equivalent amount pleases, people make costly decisions purely to avoid formally realizing a loss, even when doing so is more expensive.
- 6The Authority of the Halo1 min
A single vivid trait, such as confidence, attractiveness, or credentials, irrationally colors our judgment of a person's or organization's unrelated qualities, and deference to that impression can override our own judgment even against our conscience.
- 7The Illusion of Control and the Comfort of Action1 min
People systematically overrate their ability to influence outcomes that are actually governed by chance, and they prefer visible action to sound inaction even when standing still produces better results.
- 8The Tyranny of the Story and the News1 min
Because the mind craves coherent narrative and vivid, memorable examples far more than it craves statistical accuracy, both storytelling and constant news consumption systematically distort our sense of what is true, common, or dangerous.
About Rolf Dobelli
Rolf Dobelli is a Swiss novelist and entrepreneur, co-founder of the content curation service getAbstract. He is not a research psychologist; his contribution is synthesis, distilling decades of work by Daniel Kahneman, Amos Tversky, Nassim Taleb, and others into short, accessible chapters aimed at practical decision-makers rather than academics.
What readers say
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