Daniel Kahneman has died

Influence and Legacy

• Commenters describe the researcher as unusually influential even into his late 80s–90s, with an unblemished reputation and enduring relevance.
• His work is credited with helping to destabilize overly “rational” models in economics and encouraging acceptance of behavioral and other unorthodox approaches.
• Many see him (and an earlier collaborator who died young) as having effectively founded new scientific subfields.

“Thinking, Fast and Slow” and Dual-Process Thinking

• The book is widely cited as life‑changing or at least highly impactful, especially the “System 1 / System 2” (dual‑process) lens for understanding intuitive vs effortful thought.
• Some readers, however, found the book long, repetitive, or “obvious,” and a few couldn’t finish it.
• Several note that dual‑process ideas long predate the book and that the terminology is debated and sometimes seen as an oversimplified metaphor.

Replication Crisis and Scientific Rigor

• Multiple comments note that a number of specific findings in the book, especially social priming, failed or are likely to fail replication.
• Others stress that many core results—particularly classic judgment and decision experiments—have held up better than most of the field.
• The author is praised for later publicly acknowledging overconfidence in underpowered studies and for articulating how publication bias and small samples misled him.
• A minority argue this should be seen as serious scientific failure; others see it as science self‑correcting.

Status of Psychology and Behavioral Research

• There is debate over whether psychology is a “real” science: critics point to weak laws of behavior and replication problems; defenders emphasize experimental method and reproducible results in many areas.
• Concerns raised include overreliance on WEIRD (Western, educated) student samples and cultural/time sensitivity of behavioral findings.

Applications, Nudging, and Ethics

• Commenters discuss how these ideas underpin “nudging” and choice architecture in policy and product design.
• Some see subtle behavioral influence (e.g., defaults, UX choices) as unavoidable and potentially beneficial if aligned with users’ interests.
• Others worry about paternalism, manipulation, and the real‑world harms of “pop‑behavioral” interventions built on fragile findings.

Other Works and Recommendations

• Several recommend the later book Noise as more rigorous and practically useful, and biographies or narrative accounts of the research partnership as excellent context.