Section 2 — Science and Truth
Session 6 of 16
Thursday, August 14, 2026
When people doubt science
Scientific consensus on vaccines, climate change, evolution, and other topics is rejected by large portions of the public — not only by people who lack information, but sometimes by highly educated individuals. Why does this happen? In this session we examine the psychology and sociology of science denial and skepticism, distinguish legitimate scientific skepticism from motivated rejection of evidence, and develop the language tools for discussing these issues honestly without dismissing or provoking the people we disagree with.
Vocabulary for this session
skepticismdenialmisinformationconfirmation biascredibility
Grammar focus
Grammar focus: Conceding and countering — "I understand why people are concerned, but..." / "That's a fair point; however, the evidence suggests..." / "I can see where that comes from, and at the same time..." These structures let you acknowledge another person's perspective without agreeing with their conclusion. They are essential for productive disagreement — in English and in life.
Come prepared to discuss
"Have you ever doubted something the scientific community was confident about? What drove that doubt — and was it legitimate?"
Before this session
Prepare: Think of one topic on which you know scientific consensus exists but you have encountered strong public doubt or resistance — in your country, in your industry, or among people you know. Come ready to describe: What is the scientific consensus? What doubts have you encountered? What reasons do people give for their skepticism?
Task-Based Activity
The Doubt Diagnosis. Present students with four real-world cases of science skepticism — one with legitimate concerns (early-stage, poorly replicated research), one driven by political identity, one driven by economic interest, and one driven by cultural or religious values. Students analyze each case: Is this reasonable skepticism or motivated denial? What evidence supports their diagnosis? Debrief: What distinguishes healthy skepticism from bad-faith denial — and why does the distinction matter?
Career-Oriented Take — How to Frame It
Professionals in healthcare, policy, communications, and business regularly need to engage with audiences who are skeptical of evidence-based recommendations. The language of this session — conceding legitimately and then redirecting to evidence — is more persuasive than blunt correction. Treating skepticism with curiosity rather than contempt is both more ethical and more effective. This is a skill that translates directly to client communication, leadership, and cross-cultural collaboration.
Big Picture — Global Context
Science denial is not a new phenomenon — it accompanied the germ theory of disease, the age of the Earth, and the dangers of tobacco long before the internet. What has changed is the speed and scale at which misinformation spreads. Understanding why people reject evidence — distrust of institutions, identity-protective cognition, economic incentives — is the first step toward addressing it. The problem is not simply ignorance; it is a complex interaction of psychology, sociology, and politics.
Homework (assign after session)
Identify a scientific topic that is widely accepted by researchers but contested in public discourse in your country or field. Write 100 to 150 words describing: What does the scientific consensus say? What objections do skeptics raise? How would you respond to those objections using the concede-and-counter structures from today's session?