The Problem With Trying To Be Rational - Steven Pinker

Steven Pinker is a Cognitive Psychologist at Harvard University, a psycholinguist and a Best Selling Author. It would be nice to always make the right decision. To escape the prison of human emotions and biases and operate from a purely rational place. Steven's new book breaks down rationality into its components in an attempt to understand just what we're all missing from our mental makeup. Expect to learn why betting websites are the most accurate forecasters of the future, why learning lists of cognitive biases won't always make you more effective, whether smart people are more or less rational on average, whether politics makes you dumber, how to balance rationality with a desire to be intuitive and present and much more... Sponsors: Join the Modern Wisdom Community to connect with me & other listeners - https://modernwisdom.locals.com/ Get 10% discount on your first month from BetterHelp at https://betterhelp.com/modernwisdom (discount automatically applied) Get a Free Sample Pack of all LMNT Flavours at https://www.drinklmnt.com/modernwisdom (discount automatically applied) Extra Stuff: Buy Rationality - https://amzn.to/3qtQ84X Follow Steven on Twitter - https://twitter.com/sapinker Get my free Reading List of 100 books to read before you die → https://chriswillx.com/books/ To support me on Patreon (thank you): https://www.patreon.com/modernwisdom #stevenpinker #rationality #mentalmodels - 00:00 Intro 00:26 Is Studying Cognitive Biases Beneficial? 09:42 Applying Bayesian Reasoning in Life 22:20 Tensions between Rationality & Intuition 32:20 How Conspiracies Subvert Rationality 41:52 Conclusion - Join the Modern Wisdom Community on Locals - https://modernwisdom.locals.com/ Listen to all episodes on audio: Apple Podcasts: https://apple.co/2MNqIgw Spotify: https://spoti.fi/2LSimPn - Get in touch in the comments below or head to... Instagram: https://www.instagram.com/chriswillx Twitter: https://www.twitter.com/chriswillx Email: https://chriswillx.com/contact/

Steven PinkerguestChris Williamsonhost

Jan 20, 202242mWatch on YouTube ↗

WHAT IT’S REALLY ABOUT

Steven Pinker Explains Why Perfect Rationality Is Impossible Yet Vital

Steven Pinker and Chris Williamson explore why humans struggle to be rational, even when we know about cognitive biases and formal reasoning tools. They discuss the limits of intelligence as a safeguard against bias, the role of communities, norms, and prediction markets in improving judgment, and how Bayesian reasoning and expected utility can guide everyday decisions. Pinker emphasizes bounded rationality: reasoning itself has costs, so we must trade off optimal decisions against time, information, and cognitive effort. They also examine conspiratorial thinking, declining trust in institutions, and practical strategies for balancing rational analysis with intuition in real life choices.

IDEAS WORTH REMEMBERING

5 ideas

Name and study common biases to deploy them as tools, not trivia.

Knowing concepts like sunk cost fallacy, availability bias, and base-rate neglect—plus their corrective ‘normative models’—gives you a portable toolkit you can apply to unfamiliar situations instead of relying only on gut feel or familiar contexts.

Guard especially against my‑side bias, even if you’re highly intelligent.

Smart people are not immune to steering evidence toward conclusions that favor their political tribe, ideology, or professional camp; consciously seek out disconfirming evidence and opposing media, and expose your ideas to critical communities that tolerate free speech.

Use Bayesian thinking by explicitly considering priors, evidence strength, and base rates.

Before updating your belief on a test result, news story, or claim, ask: How plausible was this to begin with (prior)? How likely is this evidence if the claim is true (likelihood)? And how common is this kind of evidence overall (base rate/false positives)? Even informal approximations can dramatically improve judgment.

Evaluate risky choices with expected utility, not just vivid outcomes.

Multiply the probability of each outcome by how good or bad it would be, then compare options; this clarifies decisions like buying extended warranties (often bad value), wearing helmets/seatbelts, or speeding in a car versus the small but catastrophic risk.

Balance rational analysis with bounded rationality—overthinking has real costs.

Information, time, and cognitive effort are limited; you can’t endlessly gather data or compute the perfect answer. Accept that acting on imperfect information is unavoidable, and sometimes ‘he who hesitates is lost’—set thresholds for “good enough” decisions rather than chasing certainty.

WORDS WORTH SAVING

5 quotes

Reasoning itself has costs... You can't spend the rest of your life gathering data, because then your life is gone.

— Steven Pinker

All of us are subject to a biased bias, namely all of us think that everyone else is biased, but not us.

— Steven Pinker

Good forecasters tend not to be your name‑brand pundits, who tend to have a pretty crummy track record, because they're always pushing their political ideology.

— Steven Pinker

When it comes to things that don't impinge on your day‑to‑day life... people believe things 'cause it expresses the right values.

— Steven Pinker

You can't spend the rest of your life gathering data... sometimes he who hesitates is lost.

— Steven Pinker

Cognitive biases, rationality, and the limits of self-correctionIntelligence vs. rationality and the ‘my-side’ biasBayesian reasoning, priors, and forecasting/prediction marketsExpected utility, risk–reward tradeoffs, and bounded rationalityIntuition, overthinking, and making high-stakes life decisionsConspiracy theories, belief, and distrust of institutionsCommon knowledge and the social dimension of rationality

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