Speaker

Daniel Kahneman

Daniel Kahneman

Israeli-American psychologist and Nobel laureate in economics (2002), best known for his decades-long collaboration with Amos Tversky on heuristics and biases, distilled for general readers in Thinking, Fast and Slow (2011). His final book, Noise: A Flaw in Human Judgment (2021, with Olivier Sibony and Cass Sunstein), extended his critique of decision-making to the largely ignored problem of random variability in human judgement.

Kahneman trained as a psychologist in Israel and spent most of his career at Princeton. His work with Tversky demonstrated that people rely on mental shortcuts — heuristics, which are rules of thumb that work well in routine situations but generate predictable errors, called biases, when applied outside their domain. The availability heuristic (judging probability by how easily examples come to mind), the representativeness heuristic (judging by similarity to a prototype), and anchoring (over-weighting an initial number) became the canonical cases. Prospect theory — their formal account of how people value gains and losses asymmetrically — earned the Nobel Prize.

Noise argued that the behavioural-science literature had over-invested in bias and under-attended to noise: the random, case-by-case variability in judgements that should be identical. Where bias is a systematic tilt (an archer who always shoots left), noise is scatter (an archer whose shots land unpredictably across the target). Both reduce accuracy; the corrections for each differ entirely.

Core positions

Kahneman distinguishes two modes of cognition: System 1, the fast, automatic, associative processing that handles familiar tasks without effort; and System 2, the slow, deliberate reasoning required for unfamiliar or computationally demanding problems. The distinction is phenomenological, not a claim about brain regions, and he holds it is robust to the replication failures that have undermined some of the specific priming studies he cited in Thinking, Fast and Slow.

On intuition, he is consistently sceptical outside the narrow conditions — regular environments, substantial experience, rapid unambiguous feedback — that allow genuine expertise to form. CEOs, judges, and clinicians rarely meet those conditions, however confident they feel. His practical prescription is to delay intuition: assess each dimension of a decision independently before forming an overall impression, denying vivid early information the chance to colonise subsequent reasoning.

On happiness, he separates experienced well-being (moment-to-moment affect) from evaluative satisfaction (the retrospective sense of how one’s life has gone) and argues that people demonstrably optimise the second — which is shaped heavily by memory, and memory is shaped by peaks and endings rather than duration.

In the wiki