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The Art of Thinking Clearly

Rolf Dobelli · 2013

Notice the reasoning error before naming the conclusion.

Big Idea

Dobelli uses short essays to introduce common reasoning errors and encourage more careful everyday decisions.

Selection bias

Visible success stories can hide the many attempts that failed.

Confirmation

Evidence supporting a favored belief can feel easier to notice and accept.

Sunk costs

Money or effort already spent can distract from the best decision now.

Social shortcuts

Popularity and authority can influence judgment without improving the evidence.

A fallible guide

Bias labels are prompts for reflection; they do not automatically settle a disputed decision.

Notooo Take

Before continuing a failing plan, compare future benefits with future costs.

One Thing to Keep

Notice the reasoning error before naming the conclusion.

NOTOOO · KHIZOOOLOGYOne Book. One Page.khizooology.com

Why this book matters

Dobelli uses short essays to introduce common reasoning errors and encourage more careful everyday decisions.

About this Notooo

This note brings together five short sections: Selection bias; Confirmation; Sunk costs; Social shortcuts; A fallible guide. It offers an original source-based interpretation, not a full-book recap or Khizar’s personal reading account.

A khizooo-curated one-page synthesis created with AI-assisted research. It captures useful ideas, not the complete book.
Notooo is not a replacement for reading the original book.