What role do experts play in our acquisition of knowledge?
TOK Exhibition Prompt 22 — Object Examples & Rationale
A complete, examiner-written breakdown of IB TOK Exhibition IA Prompt 22 — five worked object examples, linked optional themes, knowledge questions and top-band commentary to help you nail the TOK exhibition for IB DP May 2026.
The Prompt
“What role do experts play in our acquisition of knowledge?” — Prompt 22 of the 35 prescribed IA prompts.
Assessment Weight
TOK exhibition = one-third of your final TOK grade.
Word Count
950 words max across all 3 objects combined (plus references).
Session
Updated & mapped for TOK assessment.
Decoding Prompt 22 – “What role do experts play in our acquisition of knowledge?”
IB TOK Exhibition Prompt 22 asks a question that defines contemporary life: what role do experts play in shaping the knowledge we consume and acquire? Whether we recognise it or not, expert voices — doctors, scientists, economists, journalists, academics — mediate almost every piece of significant knowledge we encounter. This prompt asks you to examine how experts gatekeep, validate, simplify, and sometimes distort the knowledge that reaches ordinary knowers. Your three objects must each illustrate a different mechanism of expert influence.
A top-band exhibition on Prompt 22 shows three things: the specific mechanism by which an expert’s authority reaches us (credentials, institutions, media); how that authority shapes what we come to treat as knowledge; and the trade-offs — benefits and limitations — of relying on expertise. Object ideas flow from the natural sciences, knowledge & language, and knowledge & politics.
TOK Exhibition Objects for Prompt 22
Each example below includes the object, linked optional theme, examiner-written rationale, and a knowledge question to extend your analysis.
A Stethoscope Used by a Practising Physician
A physician’s stethoscope symbolises the quiet but powerful role medical experts play in shaping what patients accept as knowledge about their own bodies. When a doctor listens to a patient’s heart and then issues a diagnosis, that diagnosis becomes knowledge for the patient in a way that their own bodily sensations often cannot. The stethoscope itself is both an instrument and a visual cue of expertise — its very presence confers authority before any word is spoken. This object illustrates how expert knowledge functions through a combination of specialised training, institutional certification, and diagnostic tools that lay people cannot fully interpret on their own. The knowledge a patient acquires from their doctor is filtered through the physician’s judgement, language, and often simplified vocabulary; patients rarely receive raw evidence but instead receive the expert’s interpretation of it. This invites reflection on how expertise is simultaneously indispensable (few of us could diagnose ourselves) and limiting (we rarely access the reasoning behind the diagnosis), shaping a form of knowledge acquisition that is trust-based rather than independent.
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A Climate Change Report Cover (IPCC)
A printed cover of an IPCC (Intergovernmental Panel on Climate Change) Assessment Report represents how collective expert authority constructs the knowledge the public then consumes. The IPCC consolidates research from thousands of climate scientists worldwide and translates it into summary statements that governments, media, and citizens treat as settled knowledge. This object highlights how experts function not merely as individuals but as coordinated communities whose peer-review processes, data verification, and careful language produce knowledge claims far more robust than any single scientist could offer. Yet it also illustrates the filtering that occurs: by the time the IPCC’s 4,000-page reports reach the public, they have been condensed into summary graphics, headline phrases and policy recommendations. What the public consumes is expert-curated knowledge, several layers removed from the primary research. This reveals both the strength of collective expertise and its paradox: the more rigorous and comprehensive the expert process, the more the final public knowledge depends on trust rather than direct examination.
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A University Textbook
A university-level textbook is a concentrated artefact of expert influence on knowledge acquisition. Every textbook represents thousands of hours of expert decision-making: what to include, what to exclude, how to sequence topics, which debates to highlight, which to omit. The authors are themselves acknowledged experts whose reputations lend authority to the contents. Students acquire most of their formal education through such curated expert outputs, and the knowledge they graduate with is heavily shaped by these editorial choices. This object illustrates that experts influence knowledge not only by generating it but by organising and framing it for transmission. Two economics textbooks written by experts of different schools — Keynesian versus Austrian, for example — will produce graduates with different conceptions of how economies work. The textbook thus reveals that expert influence extends beyond discovery to the architecture of understanding itself, raising important questions about whether diverse expert voices reach students or whether dominant expert perspectives become invisible defaults.
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2 More Objects for Prompt 22
Two additional examiner-written object examples to help you finalise your TOK exhibition selection.
A Legal Document Signed by a Solicitor
A contract or legal document signed and stamped by a practising solicitor reveals how legal experts translate complex statutory and case-law knowledge into actionable form for ordinary knowers. Most citizens cannot interpret raw legislation or case precedent; they rely on solicitors and barristers to tell them what the law permits or forbids. The signed document represents expert-certified knowledge — the solicitor vouches that the content is legally sound, and the signature itself carries weight in court and commerce. This object exemplifies a particular feature of expert influence: experts often produce knowledge that others cannot independently verify, creating a structural dependency. A layperson reading the same statutes may arrive at the opposite conclusion from a qualified expert, yet the expert’s interpretation prevails because of institutional recognition. This highlights how expertise functions not only through superior information but through socially sanctioned authority — knowledge acquires its standing from who vouches for it, not only from its intrinsic accuracy.
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A Documentary Streaming Poster (e.g., Attenborough)
A poster for a major natural history documentary — such as Sir David Attenborough’s Planet Earth series — represents how expert voices shape public knowledge through mass media. Attenborough, with decades of field experience and institutional backing, is accepted as a trusted expert whose narration renders complex ecological knowledge accessible to global audiences. Millions of viewers acquire their understanding of biodiversity, evolution, and conservation primarily through such documentaries. This object illustrates how expert authority combined with visual storytelling produces a particularly effective form of knowledge transmission — yet one in which the audience never meets the scientists whose research actually underpins each claim. The expert communicator becomes the interface through which specialist knowledge reaches the world, creating both tremendous reach and a layer of narrative framing that shapes what viewers come to “know” about nature. The documentary therefore shows how expertise in the modern era is increasingly performative: an expert’s ability to communicate is now inseparable from their influence over public knowledge.
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Knowledge Questions for Prompt 22
Use these knowledge questions to strengthen the analytical depth of your exhibition commentary.
Does acquiring knowledge through experts count as genuine understanding, or merely as authorised belief?
What distinguishes a real expert from someone who merely performs expertise through credentials, vocabulary, or institutional affiliation?
When experts disagree, how does the non-expert decide which knowledge to accept?
Does deep reliance on experts undermine the ideal of the autonomous knower, or is it an unavoidable feature of complex modern knowledge?
Can expert consensus be wrong for decades (as in outdated medical practice) — and if so, what epistemic safeguards remain?
Are experts influencers of knowledge, gatekeepers of knowledge, or producers of it — and does the answer change between disciplines?
How to Score High on Prompt 22
Three strategies our IB examiners use when coaching students through the TOK exhibition.
Name the mechanism of expert influence
Each object should illustrate a different way experts shape knowledge — credentialed diagnosis, peer-reviewed consensus, curation, legal certification, or media performance. Three objects showing the same mechanism feel flat.
Present the trade-off — don’t just defend or attack experts
Top-band commentary shows both the strength (rigour, accumulated knowledge, efficiency) and the limit (trust dependency, gatekeeping, invisible framing) of expert influence. Nuance beats advocacy.
Justify — don’t just describe
The top markband (9–10) is reached only when the commentary explains why the object illustrates the prompt, not just that it does.
TOK Exhibition Prompt 22 — FAQs
What is TOK Exhibition Prompt 22?
Which optional themes pair well with Prompt 22?
Can I critique experts in my exhibition, or must I defend expertise?
What word limit applies to the TOK exhibition?
Can SEV7N help me with Prompt 22?
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