Coaching practices for Dunbar's Number During a Big Change

Describe almost anything you are working through and IX Coach finds the practices whose real-world fit is closest. For Dunbar's Number During a Big Change, these are the strongest matches in the current practice library.

Does this sound like the set of challenges you might be facing?

  • I let all my looser acquaintances go totally silent because they felt less important than my close people
  • If you asked me to name my actual five closest people I’m not sure I could
  • I still feel just as close to people I haven’t actually talked to in months, and I keep assuming the bond is fine on warmth alone
  • I’m trying to keep everyone close at once and the result is that I’m stretched thin and fully present with no one
  • My calendar is packed with people and plans and yet I feel weirdly lonely in all of it

Practices that may help

  1. Dunbar's Number
    Robin Dunbar's research proposes that the human neocortex supports a stable social group of roughly 150 people, with nested layers of closer relationships (5, 15, 50) requiring progressively more time investment to maintain. The 150-person figure has observational support across hunter-gatherer societies, historical military units, and company sizes; the nested-layer model is more contested. The practical implication is that meaningful relationships are a limited resource that require deliberate allocation.
  2. Maintain weak ties for information and opportunity
    The 50-to-150 layer isn't maintenance overhead — it's your network's reach.
    Dunbar's Number
  3. Map your social layers using Dunbar's concentric circles
    Know which five people are in your inner circle and who fills the 15 and 50 layers.
    Dunbar's Number
  4. Invest contact time as the currency of closeness
    Relationships are maintained by time investment; without it, they drift toward outer layers.
    Dunbar's Number
  5. Triage your outer layers to protect inner-layer capacity
    You cannot expand your inner circle without something moving outward — the constraint is cognitive, not motivational.
    Dunbar's Number
  6. Prioritize depth over breadth in social investment
    Having five genuinely close friends is more protective of wellbeing than having fifty adequate ones.
    Dunbar's Number
  7. Update beliefs incrementally, not all at once
    New evidence should shift your probability somewhat — rarely from 5% to 95% in one step.
    Bayesian Thinking: How to Update Beliefs Rationally
  8. Decompose the unknown into knowable sub-problems
    Break the question you cannot answer directly into smaller questions you can.
    Fermi Estimation
  9. Update beliefs frequently and in small increments
    When new evidence arrives, adjust your probability estimate — even if the change is small.
    Superforecasting
  10. Update incrementally as evidence arrives rather than waiting for certainty
    State your current best-guess probability, identify what would shift it, and update when that evidence arrives.
    Ambiguity Aversion — Why Unknown Odds Feel Worse Than Bad Odds

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