
Chapter 3 of Pinker’s Rationality (2021) begins a 7-chapter tour through the tools of reason:
Logic and Critical Thinking
Probability and Randomness
Beliefs and Evidence (Bayesian Reasoning)
Risk and Reward (Rational Choice and Expected Utility)
Hits and False Alarms (Signal Detection and Statistical Decision Theory)
Self and Others (Game Theory)
Correlation and Causation
The final two chapters reach the conclusion that humanity has indeed entered an epistemic crisis.
Logic and critical thinking are important to avoid errors in reasoning. This, in turn, avoids bad decisions and more importantly can sweep away bad, destructive ideas like ‘wokeism’, now dangerously prevalent in mainstream media and academia.
Pinker explains formal logic but emphasizes informal fallacies – and there are a lot of them. These fallacies have overtaken large swaths of academia and journalism, who now apply them with gusto because they wrongly perceive their mission not as seeking knowledge but instead as advancing social justice. They should read the books we’re studying.
Logic is an important tool but rationality can never be reduced to just logic because:
- There is a fundamental distinction between logical propositions and empirical ones;
- Formal logic is limited to symbols, blind to the content of the propositions;
- Knowledge that matters is not black and white – truth can be fuzzy, shades of grey –about family resemblance and categories instead of yes or no.
Pinker ends chapter 3 with a fascinating discussion of pattern association, artificial intelligence and deep machine learning.
Chapter 4 of Rationality is Probability and Randomness. It reviews several interpretations of what probability means, then parses through probability estimation problems like the availability heuristic (the mind ranks things we see more often as more probable) and common probability errors. The most interesting section explains public outrage and over reaction to traumatic world events from shark attacks, terrorism, plane crashes, to school and police shootings.
The 2020 killing of George Floyd by a white police officer led to violent riots, the Rittenhouse case nonsense and sudden adoption of a radical academic doctrine, Critical Race Theory, by universities, journalists and corporations. Pinker writes: “Yet as with terrorism and school shootings, the numbers are surprising. A total of 65 unarmed American of all races are killed by the police in an average year, of which 23 are African American, which is around three tenths of one percent of the 7,500 African American homicide victims”. (p.123).
Game Theory (chapter 8) is the tool of reason needed to understand what Thomas Schelling identified in the 1960s as a communal outrage event – “a flagrant, widely witnessed attack upon a member or symbol of a collective. This inspires the mainstream victim narrative: a moralized allegory in which a harmful act is sanctified, the damage consecrated as irreparable and unforgivable. The goal of the narrative is not accuracy but solidarity. Picking nits about what actually happened is seen as not just irrelevant but sacrilegious or treasonous.” (p. 124, endnote 28)
Racial and gender ideologies as well as wealth redistribution arguments are highly illogical, as Mr. Spock would say. They only way they make sense is if you are a conflict theory (as opposed to mistake theory) person who sees the world not rationally but through a systemic oppression-victimhood narrative.
Next week, we move on to Bayesian Reasoning. Happy Thanksgiving from the War Chest.









