Chapter 23 Exercises

How to use these exercises: Work through the parts in order. Part A builds recognition skills, Part B develops analysis, Part C applies concepts to your own domain, Part D requires synthesis across multiple ideas, Part E stretches into advanced territory, and Part M provides interleaved practice that mixes skills from all levels.

For self-study, aim to complete at least Parts A and B. For a course, your instructor will assign specific sections. For the Deep Dive path, do everything.

Part A: Pattern Recognition

These exercises develop the fundamental skill of recognizing tacit knowledge across domains.

A1. For each of the following scenarios, identify (i) the explicit knowledge involved, (ii) the tacit knowledge involved, and (iii) what would be lost if only the explicit knowledge were preserved.

a) A master carpenter selects wood for a cabinet. She examines several boards, running her hands along the grain, flexing them slightly, and tapping them with a knuckle. She rejects three boards that look identical to the ones she selects.

b) A senior air traffic controller is handling a busy arrival sequence. She assigns a speed reduction to one aircraft and a heading change to another, creating a gap that does not yet exist in the traffic flow but will be needed in four minutes when a third aircraft crosses the arrival path.

c) A veteran homicide detective arrives at a crime scene and, within five minutes, tells his partner: "This wasn't a burglary gone wrong. This was personal." He has not yet examined any evidence in detail.

d) A senior nurse checks on a post-operative patient and immediately calls the surgeon, saying, "Something's not right." The patient's vital signs are within normal limits. The surgeon arrives and discovers internal bleeding that has not yet manifested in the monitors.

e) An experienced mechanic listens to an engine idling and says, "Your timing chain is stretching. You've got about three thousand miles before it becomes a real problem."

f) A veteran teacher notices that a quiet student in the back row is about to cry, and discreetly provides an excuse for the student to leave the room before anyone else notices.

g) A sommelier tastes a wine and identifies not only the grape variety and region but the approximate vintage year and whether the wine was aged in new or used oak barrels.

h) A senior software architect reviews a system design and says, "This will be fine for the first year, but you'll hit scaling problems around a hundred thousand users. The database schema needs to be redesigned before that happens."

A2. Classify each of the following knowledge-transfer methods by its effectiveness at transmitting (a) explicit knowledge and (b) tacit knowledge. Use a scale of 1 (ineffective) to 5 (highly effective).

a) A textbook b) A video tutorial c) A one-on-one apprenticeship lasting two years d) A multiple-choice exam e) A hands-on workshop lasting one week f) A procedure manual g) Working alongside an expert for six months with no formal instruction h) An AI-powered adaptive learning platform i) An oral tradition passed from master to apprentice over a decade j) A detailed checklist

A3. For each of the following pairs, identify which type of knowledge (explicit or tacit) is more important for expert performance and explain your reasoning.

a) Pilot: knowing the checklist for engine failure vs. feeling the aircraft's response to turbulence b) Physician: knowing the diagnostic criteria for heart failure vs. recognizing that a patient "doesn't look right" c) Programmer: knowing the syntax of a programming language vs. knowing how to structure a complex system d) Negotiator: knowing negotiation frameworks (BATNA, anchoring) vs. reading the other party's emotional state e) Musician: knowing music theory (scales, chord progressions) vs. knowing how to phrase a melodic line expressively

A4. The chapter describes the "curse of tacit knowledge" in sports coaching: great players often make poor coaches because their knowledge is too deeply tacit to articulate. Identify three other domains where a similar curse operates -- where the most skilled practitioners are often the worst at teaching -- and explain the mechanism in each case.

A5. Place each of the following practitioners at the appropriate stage of the Dreyfus skill acquisition model (Novice, Advanced Beginner, Competent, Proficient, Expert) and justify your classification.

a) A medical student who can recite the steps of a physical examination but freezes when a patient presents with an unexpected symptom.

b) A cook who can modify a recipe when an ingredient is unavailable but struggles to improvise a dish from scratch.

c) A programmer who can solve any well-defined coding problem but consistently over-engineers solutions because she cannot feel when "good enough" is good enough.

d) A teacher who walks into a classroom and immediately adjusts the planned lesson because she senses that the students are not in the right emotional state for the material she had prepared.

e) A driver who follows GPS directions precisely but cannot navigate without them and does not notice when the GPS directs her through a clearly inefficient route.

Part B: Analysis

These exercises require deeper analysis of tacit knowledge patterns.

B1. The Knowledge Audit. Choose a profession you know well and conduct a knowledge audit:

a) List the five most important pieces of explicit knowledge a practitioner needs (facts, procedures, rules, principles).

b) List the five most important pieces of tacit knowledge a practitioner needs (skills, intuitions, pattern recognition, embodied understanding).

c) For each tacit knowledge item, describe how it is currently transmitted (apprenticeship, mentoring, trial and error, osmosis, or not transmitted at all).

d) Assess the vulnerability of the profession to tacit knowledge loss. What would happen if the most experienced practitioners all retired simultaneously? Which tacit knowledge items would be most difficult to reconstruct?

e) Propose an intervention that would improve tacit knowledge transmission without destroying the tacit knowledge itself (i.e., without falling into the formalization trap).

B2. The Formalization Trap. Analyze the following knowledge formalization attempt:

A hospital system creates a "Clinical Decision Support System" that codifies the diagnostic reasoning of its most experienced physicians. The system presents physicians with a checklist of symptoms, test results, and risk factors, and recommends a diagnosis and treatment plan based on evidence-based guidelines. The system is designed to ensure that every patient receives care consistent with the best available evidence, regardless of which physician they see.

a) What explicit knowledge does the system capture effectively?

b) What tacit knowledge does the system miss? Identify at least five dimensions of clinical expertise that the system cannot represent.

c) How might the system be iatrogenic? Describe at least two ways the system could make clinical care worse rather than better.

d) How might the system create a cobra effect? Describe a scenario in which the system's existence reduces the development of the tacit knowledge it was intended to supplement.

e) Under what conditions would the system be genuinely beneficial? Design constraints that would maximize the system's value while minimizing its iatrogenic risks.

B3. Recognition-Primed Decision Making Analysis. Choose a domain in which you have significant experience. Describe a specific instance in which you made a rapid, intuitive decision that turned out to be correct. Then:

a) Reconstruct, as precisely as you can, the cues you noticed (consciously or unconsciously) that triggered the decision.

b) Identify the pattern you recognized -- the "type" of situation that your experience mapped this instance onto.

c) Describe the mental simulation you ran (if any) to validate your first-choice action.

d) Assess whether a novice in your domain could have made the same decision. If not, what tacit knowledge did you draw on that the novice would lack?

e) Attempt to formalize your decision as a set of if-then rules. How many rules would be needed? Do the rules capture the full decision, or do they miss something essential?

B4. The Apprenticeship Design Challenge. You have been asked to design an apprenticeship program for one of the following roles:

• Emergency room physician
• Artisan bread baker
• Cybersecurity incident responder
• Wildland firefighter
• Criminal defense attorney

For your chosen role:

a) Identify the three most important tacit knowledge areas the apprentice must develop.

b) Design a progression of experiences that would develop each tacit knowledge area, following the Dreyfus model stages.

c) Specify the duration of each stage and justify the duration based on the complexity of the tacit knowledge involved.

d) Design a feedback mechanism that provides the apprentice with embodied, contextual feedback (not grades or scores) at each stage.

e) Identify the greatest risk to your apprenticeship design and propose a mitigation strategy.

Part C: Application to Your Own Domain

These exercises connect tacit knowledge to your area of expertise.

C1. Identify the single most important piece of tacit knowledge in your professional domain -- the one thing that most distinguishes experts from competent practitioners. Then:

a) Describe what the knowledge looks like in practice. What does an expert do differently from a competent practitioner, and how does the difference manifest?

b) Explain why this knowledge resists formalization. What would be lost if you tried to write it down as a procedure or checklist?

c) Describe how this knowledge is currently transmitted in your field. Is the transmission mechanism effective? Is it at risk?

d) Assess whether AI could, in principle, replicate this tacit knowledge. What would be required? What obstacles exist?

e) Propose one change to how your field trains new practitioners that would improve tacit knowledge transmission.

C2. Describe a time when you relied on tacit knowledge to make a decision or solve a problem. Analyze the experience using Polanyi's framework:

a) What did you know that you could not tell? What was the gap between your knowledge and your ability to articulate it?

b) How did you acquire this knowledge? Was it through formal instruction, practice, observation, mentoring, or some combination?

c) Could you have made the same decision using only explicit knowledge? What would have been different?

d) If a junior colleague asked you to explain your reasoning, what would you be able to articulate, and what would remain beyond articulation?

C3. Conduct a "retirement risk assessment" for your organization or team:

a) Identify the three most experienced practitioners and list the tacit knowledge each possesses.

b) For each person, assess the probability that their tacit knowledge could be reconstructed if they departed tomorrow.

c) Identify the single biggest tacit knowledge vulnerability -- the knowledge area that is most critical and least documented.

d) Design a knowledge-transfer intervention that addresses this vulnerability without relying on formalization (i.e., without trying to write it all down).

Part D: Synthesis

These exercises require integrating ideas across multiple chapters.

D1. Tacit Knowledge and Legibility. Chapter 16 argued that making complex systems legible destroys the complexity that made them functional.

a) Apply the legibility framework to tacit knowledge. How is the drive to make knowledge "legible" (articulable, measurable, storable) analogous to the drive to make forests, cities, and students legible?

b) Identify three "knowledge legibility projects" in the real world -- attempts to make tacit knowledge explicit and manageable. For each, assess whether the project preserved or destroyed the knowledge it was intended to capture.

c) Is there a "knowledge Waldsterben"? Can you identify a domain where the systematic formalization of tacit knowledge has led to a measurable decline in the quality of expertise?

d) Design a "knowledge preservation" strategy that respects the legibility-vitality tradeoff -- that captures what can be captured without destroying what cannot.

D2. Tacit Knowledge and the Map-Territory Distinction. Chapter 22 (if read) explored the distinction between models and reality.

a) Explicit knowledge is the "map" of expertise. Tacit knowledge is the "territory." Using three examples from this chapter, show how confusing the map with the territory leads to predictable failures.

b) The chapter argues that knowledge management systems typically capture only the "map" (explicit knowledge). Design a system that acknowledges the existence of the "territory" (tacit knowledge) without claiming to capture it. What would such a system look like?

c) Can tacit knowledge ever become the territory that generates its own maps? That is, can tacit knowledge in one person become a source of explicit knowledge for others, without the tacit knowledge being destroyed in the process? How does the master-apprentice relationship achieve this?

D3. Tacit Knowledge and Iatrogenesis. Chapter 19 analyzed how well-intentioned interventions produce harm.

a) Construct a detailed argument that standardized testing in education is iatrogenic with respect to tacit knowledge development. What is the "disease"? What is the "cure"? What harm does the cure produce?

b) Is the Dreyfus model itself an example of explicit knowledge about tacit knowledge? Does formalizing the stages of tacit knowledge development create an iatrogenic risk (e.g., treating the model as a checklist)?

c) Design an intervention to improve tacit knowledge transmission that passes the "iatrogenic check" -- that can demonstrate it will not destroy what it seeks to improve.

D4. Tacit Knowledge and the Cobra Effect. Chapter 21 showed how incentives create strategic responses that undermine the incentive's goals.

a) Knowledge management incentives (KPIs for documentation, rewards for knowledge sharing, metrics for mentoring) are incentive systems. Apply the five laws of perverse incentives from Chapter 21 to knowledge management incentives and predict the cobra effects.

b) The chapter argues that knowledge capture projects can create the illusion of preservation while accelerating knowledge loss. Map this dynamic onto the cobra bounty: what is the "cobra"? What is the "bounty"? Who are the "cobra farmers"?

c) Design a knowledge preservation incentive that is resistant to cobra effects. What would it reward? How would it measure success? What proxy risks would it need to manage?

Part E: Advanced Challenges

These exercises push beyond the chapter's material into deeper or more speculative territory.

E1. Research Ikujiro Nonaka and Hirotaka Takeuchi's SECI model of knowledge creation (Socialization, Externalization, Combination, Internalization). Compare their framework with Polanyi's tacit/explicit distinction. Does the SECI model successfully address Polanyi's Paradox, or does it underestimate the difficulty of converting tacit knowledge to explicit knowledge? Construct a detailed argument for your position.

E2. The chapter argues that AI struggles with "common sense" because common sense is tacit knowledge. Research the current state of artificial common sense (systems like ConceptNet, COMET, or the common sense reasoning capabilities of large language models). Assess whether recent AI progress represents a genuine breakthrough in tacit knowledge replication or merely a more sophisticated form of explicit pattern matching. What evidence would distinguish between these two interpretations?

E3. Ludwig Wittgenstein's concept of "knowing how" versus "knowing that" (further developed by Gilbert Ryle in The Concept of Mind) is closely related to Polanyi's tacit/explicit distinction. Research the philosophical debate between intellectualism (the view that know-how is reducible to know-that) and anti-intellectualism (the view that know-how is a distinct kind of knowledge). How does this debate illuminate the practical questions of knowledge transfer and organizational memory raised in this chapter?

E4. The chapter mentions embodied cognition -- the idea that knowledge is not just "in the head" but distributed across the body and the environment. Research the embodied cognition literature (Varela, Thompson, and Rosch; Andy Clark; Alva Noe) and assess its implications for Polanyi's Paradox. If knowledge is literally embodied -- if it resides in the hands of the surgeon, the palate of the chef, the feet of the dancer -- then what does this imply about the possibility of knowledge transfer through non-embodied media (books, screens, AI)?

E5. Design a research study to measure the tacit knowledge loss when an expert retires from an organization. Your design must address the fundamental methodological challenge: how do you measure knowledge that is, by definition, resistant to articulation and measurement? Specify your research question, methodology, data collection instruments, analysis plan, and the limitations of your approach.

Part M: Mixed Practice (Interleaved Review)

These exercises mix concepts from Chapters 16-23 to build integrated understanding.

M1. A hospital system implements the following changes simultaneously: (a) It replaces its apprenticeship-based nursing training with an online competency-based curriculum that can scale to three times as many students (legibility, Ch. 16). (b) It installs a Clinical Decision Support System that provides treatment recommendations based on evidence-based guidelines (tacit knowledge formalization, Ch. 23). (c) It reduces overlap between nursing shifts from 30 minutes to 5 minutes to improve efficiency (redundancy reduction, Ch. 17). (d) It measures nursing quality through patient satisfaction surveys and readmission rates (Goodhart's Law, Ch. 15). (e) It offers bonuses to nurses who complete the most online training modules (cobra effect, Ch. 21). Trace the complete chain of failure modes. Which tacit knowledge transmission mechanisms have been degraded? What will happen when the experienced nurses retire? Design a comprehensive reform.

M2. A software company discovers that its most productive period occurred when a legendary engineer worked there for twelve years. Since her departure three years ago, the codebase has slowly degraded. Bug rates have increased. Architecture decisions have become less coherent. New hires take twice as long to become productive. The company's response: (a) Hire consultants to document the engineering best practices (knowledge formalization). (b) Create a detailed wiki of coding standards and architecture patterns (explicit knowledge capture). (c) Implement automated code review tools (legibility project). (d) Measure developer productivity by lines of code and tickets closed (Goodhart's Law). Analyze why each of these interventions will fail to solve the actual problem. What was the legendary engineer's real contribution? How could it have been preserved? Is it too late?

M3. A traditional cooking school is being pressured to modernize. The current model: students spend two years working alongside master chefs in a working kitchen, progressing from peeling vegetables to managing stations to creating dishes. The proposed model: students complete an online curriculum covering nutrition science, food chemistry, recipe analysis, and kitchen management, followed by a six-week in-person "intensive" that provides hands-on experience. The new model costs 60% less and can accommodate five times as many students. Using concepts from Chapters 16, 17, 19, 21, and 23, analyze: What will the new model successfully transmit? What will it fail to transmit? What will happen to the quality of graduates? Is there a hybrid model that preserves the essential apprenticeship elements while achieving some of the efficiency gains?

M4. A police department replaces its traditional field training program (in which rookie officers spend six months partnered with experienced officers) with a technology-enhanced program: body cameras record all interactions, an AI system identifies "best practice" examples and "improvement areas" from the footage, and rookies review their own footage with a training supervisor weekly. Analyze this change through the lens of tacit knowledge, legibility, redundancy, and iatrogenesis. What does the camera capture? What does it miss? How does the shift from real-time, embodied mentoring to recorded, reviewed mentoring affect the transmission of tacit knowledge? Is the new system iatrogenic?

M5. Design a "Tacit Knowledge Vulnerability Assessment" template that can be applied to any organization. The template should:

a) Identify the key domains of tacit knowledge in the organization. b) Assess the current health of apprenticeship and mentoring mechanisms for each domain. c) Evaluate the risk of tacit knowledge loss due to retirement, turnover, or restructuring. d) Check for iatrogenic knowledge management practices (formalization projects that damage what they seek to preserve). e) Check for cobra effects in knowledge incentives (rewards that create the illusion of knowledge preservation while accelerating knowledge loss). f) Include a meta-check: is the assessment itself a legibility project that may be capturing only the explicit knowledge about tacit knowledge?