Core themes
Post-truth as subordination of reality, not denial of truth: McIntyre carefully distinguishes between lying (trying to convince someone that something false is true) and post-truth (creating enough doubt that your supporters have "something to hang their hats on"). Post-truth respects no cognitive consent; it simply asserts dominance through doubt.
Post-truth as authoritarian tool: Drawing on Hannah Arendt's work on totalitarianism and Timothy Snyder's On Tyranny, McIntyre argues that the goal of post-truth is to break citizens' ability to know reality outside a political context. Snyder's aphorism: "Post-truth is pre-fascism."
The 60-year genealogy of science denial: McIntyre contends that modern post-truth is not novel but the metastasis of tactics perfected by tobacco companies in the 1950s. Naomi Oreskes and Erik Conway's Merchants of Doubt documents how tobacco companies hired scientists, funded contrary research, and created false controversy to delay regulation using the mantra "the link has never been conclusively established" — a rhetorical technique that outlived tobacco and became a template for climate denial, vaccine denial, and COVID denial.
Five tropes of science denialist reasoning (Cook & Lewandowski):
- Cherry-picking evidence
- Belief in conspiracy theories
- Illogical reasoning
- Reliance on fake experts
- Demand for impossible proof (misunderstanding scientific epistemology)
McIntyre argues these same five tropes characterize contemporary post-truth politics — from false claims about inauguration crowds to election fraud to the Capitol assault on January 6.
Identity-based belief: McIntyre emphasizes that denialist beliefs are rooted in identity (which team you're on) rather than ideology. This distinction is crucial: facts don't change minds when belief is identity-protective. Reaching someone requires showing them there is room for them on the side of reality.
Authoritarian's calculus: McIntyre frames the authoritarian's reasoning: "If they can deny scientific facts about cancer and climate, why not any facts? What about crowd sizes, election totals, or whether the Capitol insurrectionists were actually Antifa?"
The Flat Earth case study: McIntyre describes attending the Flat Earth International Conference in Denver (2018), expecting the most extreme science deniers. He found their reasoning strategy was identical to anti-vaxxers and climate deniers — the same five tropes, just applied to an extreme case. This convinced him that science denial is not domain-specific but a systematic challenge to the process by which scientific truths are tested and verified.
From denial to fascism: McIntyre traces a direct line from the tobacco industry's playbook (1950s) through COVID denial (2020s) to the Capitol assault (January 6, 2021). The erosion of shared standards for evidence enables the political subordination of reality, which enables authoritarian takeover. Science denial is not a curiosity; it is the taproot of post-truth authoritarianism.
Debunking and intervention
McIntyre cites Cornelia Betsch and Philip Schmidt's 2019 Nature Human Behavior paper showing that the five tropes can form the backbone of effective debunking strategies. Importantly: there is no backfire effect — we cannot make things worse by challenging deniers if we do it respectfully. The key is identity-respecting engagement: approaching deniers with empathy, not facts jammed down their throats.
Notes
This talk was delivered at the Pontifical Academy of Social Sciences in 2021, placing it in the chronological space between the Trump administration's post-truth rhetoric and the January 6 Capitol assault. McIntyre's strength is connecting three levels: the psychology of individual belief (identity-protective cognition), the history of coordinated denial (tobacco to climate to politics), and the political consequences (authoritarianism and fascism). His argument that science denial is not about science but about epistemology itself — the ability to know reality through reason — is the conceptual linchpin. The talk is grounded in empirical work (Oreskes & Conway's historical research, Cook & Lewandowski's psychological framework, Betsch & Schmidt's intervention study) and philosophical analysis (Arendt on totalitarianism, Snyder on tyranny), making it a synthesis of scholarship rather than opinion. The framing of post-truth as fundamentally an authoritarian strategy — not a media problem, not primarily a technology problem, but a deliberate political strategy — shifts accountability from passive audiences to active power-seekers.