## TL;DR
Human decision making is shaped by cognitive biases — systematic deviations from rationality affecting everything from financial choices to medical diagnoses.

## Core Explanation
Key biases: anchoring (over-relying on first information), confirmation bias (seeking confirming evidence), availability heuristic (overestimating memorable events), framing effects, sunk cost fallacy.

## Detailed Analysis
Debiasing strategies: considering the opposite, premortem analysis, decision matrices, structured analytic techniques. The WRAP framework (Widen options, Reality-test assumptions, Attain distance, Prepare to be wrong) provides practical decision-making process.

## Further Reading
- Kahneman, Lovallo, Sibony: Before You Make That Big Decision (HBR)
- Decision Science News
- Center for Decision Research (Chicago Booth)