Are some types of knowledge more useful than others?
TOK Exhibition Prompt 2 — Object Examples & Rationale
A complete, examiner-written breakdown of IB TOK Exhibition IA Prompt 2 — 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
“Are some types of knowledge more useful than others?” — Prompt 2 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 2 – “Are some types of knowledge more useful than others?”
IB TOK Exhibition Prompt 2 asks one of the most practically grounded epistemological questions: can the value of knowledge be ranked by its usefulness? This prompt invites students to evaluate how different forms of knowledge — scientific, humanitarian, technological, cultural, linguistic — serve distinct yet overlapping human needs. Usefulness is not merely utilitarian but embraces accessibility, inclusivity, sustainability and human flourishing.
A top-scoring IB TOK exhibition on Prompt 2 does three things well: it selects objects that each demonstrate a different dimension of usefulness; it links each object to a specific real-world context; and it wrestles honestly with the counter-claim — that all knowledge has value independent of immediate use. Strong objects come from Knowledge & Technology, Knowledge & Language, and Knowledge & Indigenous Societies.
TOK Exhibition Objects for Prompt 2
Each example below includes the object, linked optional theme, examiner-written rationale, and a knowledge question to extend your analysis.
Solar-Powered Water Purification Unit
The solar-powered water purification unit exemplifies the critical utility of integrating environmental science with renewable energy technology to address global water scarcity. This innovation harnesses solar energy to purify contaminated water, making it safe for consumption and agriculture, thereby directly impacting human health and food security. The unit’s design underscores the practical application of interdisciplinary knowledge, demonstrating that knowledge which solves urgent, life-sustaining needs is immensely valuable. It reflects a convergence of theoretical principles and practical application, showcasing how technological knowledge, when applied to environmental challenges, possesses profound utility in improving living conditions and sustainability. The deployment of such units in remote or disaster-stricken areas further illustrates the tangible benefits of knowledge that combines ecological sensitivity with technological innovation, affirming the premise that the usefulness of knowledge can be significantly heightened when it directly contributes to resolving critical humanitarian and environmental challenges.
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- Ready-to-submit commentary within 950-word limit
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Braille Script Textbook
A textbook written in Braille represents an essential tool in the education and empowerment of visually impaired individuals, highlighting how adaptations in language and knowledge transmission greatly enhance accessibility and learning. This object embodies the principle that knowledge’s utility lies not only in its content but also in its availability and adaptability to diverse learning needs. The Braille textbook exemplifies how modifications in the presentation of knowledge can unlock educational opportunities, fostering inclusivity and equality in learning. By enabling access to the same breadth of knowledge available to sighted learners, Braille ensures that visual impairment does not impede intellectual development, illustrating the profound impact of inclusive educational practices on societal perceptions of disability and the overall usefulness of knowledge. It prompts reflection on the role of language and communication methods in determining the usefulness of knowledge, suggesting that knowledge becomes more valuable when it is made accessible to all members of society.
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3D-Printed Prosthetic Limb
The 3D-printed prosthetic limb stands as a testament to the remarkable advancements in biomedical engineering and materials science, offering cost-effective, customisable solutions for amputees and individuals with limb differences. This innovation not only embodies the practical application of knowledge in improving human well-being but also represents a shift towards more personalised and accessible healthcare solutions. The use of 3D printing technology in producing prosthetic limbs highlights the intersection of digital fabrication techniques with anatomical and biomechanical knowledge, showcasing how technological knowledge can be harnessed to meet specific human needs. It reflects on the broader implications of such technologies in democratising access to medical devices, challenging traditional paradigms of manufacturing and distribution in healthcare. The object illustrates the utility of knowledge that directly enhances quality of life, emphasising that the value of knowledge increases when it addresses fundamental human concerns such as health, mobility, and independence.
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The free demo class itself was more useful than months of IB support elsewhere. The tutor didn’t just teach — she diagnosed exactly where my son was losing marks on Paper 2. Honest, professional, and genuinely examiner-level. Signed up the same day.
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We’ve worked with 4 different TOK tutors before Sev7n. None came close. Their examiner gave my son a detailed marksheet mapped to the IB rubric — something no one else did. Final TOK essay: A (predicted C). That grade just saved his university offer.
2 More Objects for Prompt 2
Two additional examiner-written object examples to help you finalise your TOK exhibition selection.
Global Positioning System (GPS) Device
The GPS device, a ubiquitous tool in navigation, epitomises how technology mediates and enhances our spatial knowledge of the world. By utilising a network of satellites to provide precise location data, GPS technology transforms abstract geographical information into actionable knowledge, enabling users to navigate the physical environment with unprecedented accuracy. This object illustrates the instrumental role of technological artefacts in extending human capacities to acquire and apply knowledge, demonstrating how technology not only aids in the practical application of knowledge but also influences its conceptualisation. The GPS device prompts reflection on the dynamics between technological innovation and knowledge production, highlighting how advancements in technology can redefine what is possible to know and do, thereby expanding the realm of human understanding and interaction with the world.
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A Recipe Book Featuring Indigenous Ingredients
A recipe book focusing on indigenous ingredients and culinary traditions embodies the invaluable knowledge embedded within cultural practices, offering insights into sustainable living and nutritional wisdom passed down through generations. This object highlights the utility of cultural and traditional knowledge in promoting health, biodiversity, and environmental stewardship. By documenting and celebrating indigenous culinary practices, the recipe book not only preserves cultural heritage but also introduces broader audiences to alternative dietary practices that emphasise local, seasonal, and diverse food sources. It illustrates the significance of traditional ecological knowledge (TEK) in addressing contemporary challenges such as food security, climate change, and the loss of biodiversity, showcasing how knowledge that fosters a harmonious relationship with nature can be incredibly useful in guiding sustainable development practices. It invites a reevaluation of the criteria by which we assess the usefulness of knowledge, advocating for a broader recognition of the value of cultural and traditional knowledge in solving modern problems.
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Knowledge Questions for Prompt 2
Use these knowledge questions to strengthen the analytical depth of your exhibition commentary.
By what criteria can we rank one type of knowledge as more useful than another?
Is usefulness always measured by outcomes — or can knowledge be useful merely for existing?
Can knowledge that was once considered useless (pure mathematics, abstract philosophy) later become transformatively useful?
Is the usefulness of knowledge the same for the individual as it is for society?
Does the usefulness of knowledge depend on who can access it — and therefore on power and privilege?
If knowledge is valuable only when applied, what status does un-applied knowledge hold?
How to Score High on Prompt 2
Three strategies our IB examiners use when coaching students through the TOK exhibition.
Pick objects with a real-world context
Your object must be specific — “my grandfather’s 1998 copy of the Britannica” beats a generic encyclopedia every time. Examiners reward specificity.
Anchor to one optional theme per object
Don’t float between themes. Each object should clearly link to one optional theme or area of knowledge and stay consistent throughout.
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 2 — FAQs
What is TOK Exhibition Prompt 2?
How many objects do I need to present for Prompt 2?
Which optional themes work best with this prompt?
What is the word limit for the TOK exhibition commentary?
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