How to know what you don't know: metacognition and learning at work

Executive overview

Most people overestimate their competence in unfamiliar domains — and the less they know, the worse their self-assessment. This gap closes only through deliberate exposure, humility, and structured relationships with people who hold knowledge you lack.

The three words no one says in business — "I don't know" — are the starting point for real organisational learning.

The Dunning-Kruger effect in practice

• New employees who think they could "run the place" within three weeks are the clearest example: low knowledge means low awareness of what expertise actually requires.
• The most dangerous variant: high performers transplanting a winning formula into a new domain without accounting for its complexity.
• Ron Johnson succeeded at Apple Stores, then failed at JCPenney by applying the same playbook without understanding the new environment.
• Metacognition — thinking about your own thinking — improves with expertise; beginners don't yet know what to look for.
• Entering any new role: assume you are not the most knowledgeable person in the room, then listen for signals that confirm it.

How leaders create a learning culture

• Behaviour follows reward, not stated intent — what leaders are seen doing and rewarding matters far more than what they say they value.
• Leaders must publicly admit their own ignorance; if they don't, no one else will.
• A book club where anyone (including the leader) can recommend titles signals that not-yet-knowing is normal and valued.
• Calling out the person who suggested a book rewards the act of going out to learn.
• The three words to normalise: "I don't know" — followed by "does anyone else?" or "I'll find out."
• Resist the temptation to give a glib, fluent-sounding answer that lacks substance; operate from the power of actual knowledge.

The expert generalist

• Organisations need deep specialists, but also people who bridge silos — the expert generalist.
• Personality profile: high openness to experience, high need for cognition, moderate-to-low conscientiousness.
• The low conscientiousness is load-bearing: while nominally at work, they are reading widely or talking to people across the organisation.
• They don't have surface-level knowledge — they have genuine depth on a wide variety of topics, constantly expanding.
• Their role: translate what one expert is doing to another, and surface non-obvious connections between domains.
• Early in their careers they often struggle because managers reward completion over curiosity — many say they "succeeded despite the system."
• Identifying them: watch what they do with unstructured time; if they are building rich cross-domain knowledge, nurture it.

Building a mentoring team, not a single mentor

• Formal mentorship programmes fail when they match people without knowing what the mentee needs or what the mentor can specifically offer — that is inorganic mentoring.
• No single person holds all the knowledge someone needs; the goal is a mentoring team assembled by the mentee.
• Four roles to seek out:
  1. Superstar — someone with the career path you want; learn how they navigated it.
  2. Coach — not someone who tells you what to do, but who walks you through your hardest problems until you hear their voice in your head.
  3. Organisational navigator — someone who knows who to talk to and how things actually get done.
  4. Connector — someone with a wide network willing to make introductions inside and outside the organisation.
• Senior leaders accelerate this: when a new hire joins, find something they know well and ask them to teach you — this models reverse mentoring and signals that everyone is a source of knowledge.

How to start a mentoring relationship

• Walk up to someone you admire and ask one easy question: "Could you recommend something you've read recently?"
• Go read it, then return with one or two sentences on what you took from it, and ask for the next thing.
• Escalation of commitment: small asks compound over time; the mentor gradually realises they are having an impact and becomes more willing to invest.
• Most people in mid-career welcome being sought out — it is reinvigorating and validates their legacy.
• People who benefited from mentoring earlier in their careers tend to want to give back; the social drive to connect is more common than the cold corporate stereotype suggests.
• Let people know when they have been a mentor to you — that feedback matters and is often underdelivered.

Jazz as a model for leadership and learning

• The first law of jazz: when sitting in with a new group, listen more than you play — establish fit before trying to stand out.
• Mistakes in jazz are not stops; they are notes that have already passed. The lesson: learn from an error, then keep moving.
• Playing through mistakes without signalling distress is a skill transferable to any public leadership role.
• Playing with others builds tolerance for imperfection and reinforces that learning requires sustained exposure over years, not weeks.