503 lines
22 KiB
Markdown
503 lines
22 KiB
Markdown
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# Leverage Points Mastery
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## Overview
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**Most people intervene at the weakest points in a system because they're obvious and easy.** Donella Meadows identified 12 places to intervene in systems, ranked by leverage (power to change system behavior). The counterintuitive truth: **highest leverage points seem wrong, dangerous, or too soft**
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at first - yet they create the most fundamental change with least effort.
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**Core principle:** Small shifts at high leverage points beat massive efforts at low leverage points.
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**Required foundation:** Understanding of system structure (stocks, flows, feedback loops). See recognizing-system-patterns skill for basics.
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## The 12 Places to Intervene (Weakest to Strongest)
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### 12. Constants, Parameters, Numbers (WEAKEST)
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**What:** Changing quantities without changing structure (subsidies, taxes, standards, quotas, budget allocations, salaries, prices)
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**Why weak:** System structure stays intact; other forces adapt to offset your change
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**Software examples:**
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- Increasing server count without fixing query inefficiency
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- Raising salaries without addressing retention root causes
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- Adding engineers without improving development process
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- Setting code coverage targets without improving testing culture
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**When it works:** When structure is already optimal and you just need fine-tuning
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**When it fails:** When structure itself is the problem (most cases)
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### 11. Buffers (Size of Stabilizing Stocks)
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**What:** Reserve capacity that absorbs fluctuations and smooths variability
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**Why stronger:** Prevents cascade failures, buys time for adaptation, reduces brittleness
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**Software examples:**
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- Connection pool size (absorbs traffic spikes)
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- Retry queues with backoff (buffer failed requests)
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- Feature flags (buffer risky deployments)
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- Incident response team capacity (buffer for unexpected load)
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- Cash runway (financial buffer for startups)
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**When it works:** When variability is the problem, not average load
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**When it fails:** When used to hide structural inefficiency instead of fixing it
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**Design principle:** Right-size buffers - too small = brittle, too large = inefficient and masks problems
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### 10. Stock-and-Flow Structures (Physical Systems)
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**What:** The plumbing - who's connected to what, what can flow where, physical constraints
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**Why stronger:** Changes what's physically possible, not just incentivized
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**Software examples:**
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- Microservices vs monolith (changes possible communication patterns)
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- Database sharding (changes possible query patterns)
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- Service mesh (changes how services can discover/communicate)
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- Consolidating repositories (changes possible code reuse)
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- Network topology (what can talk to what)
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**When it works:** When the current structure makes desired behavior impossible
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**When it fails:** When behavior issues, not capability issues, are the problem
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**Warning:** Expensive and slow to change; make sure higher leverage points won't work first
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### 9. Delays (Length of Time Relative to Rate of Change)
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**What:** Time between action and consequence; how long feedback takes
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**Why stronger:** Delays determine stability - too long and you overshoot/oscillate
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**Software examples:**
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- CI/CD pipeline speed (delay from code to production feedback)
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- Monitoring alert latency (delay from problem to notification)
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- Onboarding duration (delay from hire to productivity)
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- Release cycles (delay from idea to user feedback)
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- Code review turnaround (delay in feedback loop)
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**When it works:** Shortening delays in negative feedback loops improves stability
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**When it fails:** Shortening delays in positive (reinforcing) loops accelerates problems
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**Critical insight:** Not all delays are bad - some stabilize systems. Diagnose which loop you're in first.
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### 8. Balancing Feedback Loops (Strength of Negative Feedback)
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**What:** Mechanisms that bring system back toward target (error-correction, stabilization)
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**Why stronger:** Determines how fast the system self-corrects
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**Software examples:**
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- Automated rollback on error rate spike (fast correction)
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- Auto-scaling based on load metrics (correction strength)
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- Test failures blocking deployment (correction mechanism)
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- Pre-commit hooks preventing bad code (early correction)
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- Rate limiters preventing overload (protection mechanism)
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**When it works:** When you want stability and error-correction
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**When it fails:** When balancing loop fights a reinforcing loop (you're treating symptoms)
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**Design principle:** Strengthen balancing loops that address root causes, not symptoms
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### 7. Reinforcing Feedback Loops (Strength of Positive Feedback)
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**What:** Mechanisms that amplify change (growth, collapse, virtuous/vicious cycles)
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**Why stronger:** Determines rate of exponential growth or decline
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**Software examples:**
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- Network effects (more users → more value → more users)
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- Technical debt (debt → slower → pressure → shortcuts → more debt)
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- Knowledge sharing (documentation → easier onboarding → more contributors → more docs)
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- Code quality (good tests → confidence → refactoring → better design → easier testing)
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**When it works:** Amplify virtuous cycles, dampen vicious ones
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**When it fails:** When you amplify the wrong loop or can't identify which loop dominates
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**Critical skill:** Recognize which reinforcing loop you're in - this determines whether to amplify or dampen
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### 6. Information Flows (Structure of Who Gets What Info When)
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**What:** Adding, removing, or changing availability of information; making visible what was invisible
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**Why stronger:** Can't respond to what you can't see; information changes behavior without forcing it
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**Software examples:**
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- Real-time dashboards (make system state visible)
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- Transparent incident reports company-wide (distribute awareness)
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- Public API usage/costs (help users self-optimize)
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- Test coverage visible to all (creates quality awareness)
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- Tech debt made visible to product managers (enables informed trade-offs)
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- Blameless post-mortems (share learning, not just outcomes)
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**When it works:** When people would do the right thing if they had the information
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**When it fails:** When incentives oppose desired behavior regardless of information
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**Why counterintuitive:** Seems passive ("just sharing info") but often more powerful than mandates
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### 5. Rules (Incentives, Constraints, Feedback)
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**What:** Formal and informal rules determining scope, boundaries, permissions, consequences
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**Why stronger:** Changes what's rewarded/punished, allowed/forbidden
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**Software examples:**
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- Deployment windows (constraint rules)
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- Code review required before merge (process rules)
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- On-call rotation (accountability rules)
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- Blameless culture for incidents (incentive structure)
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- "You build it, you run it" (ownership rules)
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- Budget authority levels (decision rights)
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**When it works:** When structure and information exist but incentives misalign behavior
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**When it fails:** When rules are gamed, or structure makes compliance impossible
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**Common mistake:** Adding rules to fix problems caused by misaligned goals or bad information
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### 4. Self-Organization (Power to Add/Change System Structure)
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**What:** System's ability to evolve its own structure, learn, diversify, complexify
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**Why stronger:** System can adapt to unforeseen circumstances without external intervention
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**Software examples:**
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- Evolutionary architecture (system can reshape itself)
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- Engineer-driven RFC process (system can propose its own changes)
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- Hackathons and innovation time (system experiments with new structures)
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- Open source contributions (system attracts external evolution)
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- Autonomous teams with decision authority (system components self-optimize)
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- Automated refactoring tools (code structure self-improves)
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**When it works:** In complex, changing environments where central planning fails
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**When it fails:** When self-organization optimizes locally at expense of global optimum
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**How to enable:** Create conditions for experimentation, learning, and bounded autonomy
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### 3. Goals (Purpose or Function of the System)
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**What:** The explicit objective the system is designed to achieve
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**Why stronger:** Everything else serves the goal; change goal, everything changes
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**Software examples:**
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- "Prevent all incidents" → "Learn from every incident" (changes entire security posture)
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- "Ship features fast" → "Maintain sustainable pace" (changes quality/velocity trade-offs)
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- "Maximize uptime" → "Maximize learning velocity" (changes risk tolerance)
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- "Minimize costs" → "Maximize customer value" (changes architecture decisions)
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- "Individual performance" → "Team outcomes" (changes collaboration patterns)
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**When it works:** When current goal creates perverse incentives or misses the real purpose
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**When it fails:** When goals change but structure/rules/information stay aligned to old goal
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**Why counterintuitive:** Seems abstract or "soft" but fundamentally reorients the entire system
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### 2. Paradigms (Mindset, Model, or Perception of the System)
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**What:** The mental model, shared assumptions, or worldview that gives rise to goals and structures
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**Why stronger:** Changes how we see the system, which changes everything we do
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**Software examples:**
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- "Engineers as resources" → "Engineers as investors" (changes retention approach)
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- "Bugs are failures" → "Bugs are learning opportunities" (changes quality culture)
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- "Requests are tasks" → "Requests are relationships" (changes API design)
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- "Code is liability" → "Code is asset" (changes deletion vs preservation)
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- "Users consume features" → "Users solve problems" (changes product thinking)
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- "Synchronous by default" → "Async by default" (changes entire architecture)
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**When it works:** When system can't reach desired state because mental model constrains thinking
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**When it fails:** When paradigm shifts without organizational readiness (resistance, confusion)
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**How to shift:** Question assumptions, study systems that work differently, name current paradigm explicitly
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### 1. Transcending Paradigms (STRONGEST)
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**What:** Ability to step outside any paradigm, hold multiple paradigms, recognize all paradigms as provisional
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**Why strongest:** Not attached to any one way of seeing; can choose appropriate paradigm for context
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**Software examples:**
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- Recognizing "all models are wrong but some are useful" (doesn't cling to one approach)
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- Polyglot programming (uses paradigm appropriate to problem)
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- "Strong opinions, weakly held" (updates worldview with new evidence)
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- Switching between optimizing for different constraints (speed/cost/quality) based on context
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- Recognizing trade-offs as fundamental, not problems to eliminate
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**When it works:** In environments requiring navigation of multiple conflicting paradigms
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**When it fails:** Can seem wishy-washy or uncommitted if not grounded in principles
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**How to practice:** Study diverse systems, question your own assumptions, practice "Yes, AND" thinking
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## Why This Order? The Underlying Theory
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**Counterintuitive principle:** Higher leverage points are **more abstract, slower-changing, and harder to see** - yet they control everything below them.
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### The Hierarchy of Influence
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```
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Paradigm (how we see reality)
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↓ determines
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Goals (what we optimize for)
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↓ determines
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Self-organization (how system evolves)
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↓ determines
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Rules (what's rewarded/punished)
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↓ determines
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Information flows (what's visible)
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↓ determines
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Feedback loops (what's amplified/dampened)
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↓ determines
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Delays (system responsiveness)
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↓ determines
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Structure (what's physically possible)
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↓ determines
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Buffers (how much variability is tolerated)
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↓ determines
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Parameters (the actual numbers)
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```
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**Why parameters are weak:** Changing a number doesn't change the structure generating the problem
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**Why paradigms are strong:** Changing how you see the system changes which goals you pursue, which rules you create, which information you share, and ultimately which parameters you adjust
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### The Resistance Principle
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**Leverage is inversely proportional to ease:**
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- Parameters: Easy to change, little resistance, little impact
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- Rules: Harder to change, some resistance, moderate impact
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- Goals: Hard to change, strong resistance, large impact
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- Paradigms: Very hard to change, massive resistance, fundamental impact
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**Why high leverage feels wrong:** You're challenging deeply held assumptions and threatening existing power structures.
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## Quick Identification: What Level Are You At?
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| If your solution... | You're likely at level... |
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|---------------------|---------------------------|
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| Adjusts a number, budget, quantity | 12 (Parameters) |
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| Adds capacity, reserves, slack | 11 (Buffers) |
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| Redesigns architecture, topology | 10 (Structure) |
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| Speeds up or slows down a process | 9 (Delays) |
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| Adds monitoring, alerts, auto-scaling | 8 (Balancing loops) |
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| Amplifies network effects or growth | 7 (Reinforcing loops) |
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| Makes something visible, adds transparency | 6 (Information) |
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| Changes policies, mandates, incentives | 5 (Rules) |
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| Enables teams to self-organize, experiment | 4 (Self-organization) |
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| Redefines what success means | 3 (Goals) |
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| Changes fundamental assumptions | 2 (Paradigm) |
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| Questions whether the problem is real | 1 (Transcending) |
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**Red flag:** If your first 3 solutions are levels 12-10, you're stuck in "parameter tweaking" mode
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## Generating Higher-Leverage Alternatives
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**Heuristic: Ask "Why?" three times, then intervene there**
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Example: "We need more servers"
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- Why? Because response time is slow
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- Why is response time slow? Because we have 20 serial service calls
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- Why do we have 20 serial calls? Because we designed for strong consistency everywhere
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- **Intervention:** Question paradigm of "sync by default" → move to async/eventual consistency (Level 2)
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**Heuristic: Move up the hierarchy systematically**
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For any proposed solution at level N, ask:
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- Level N+1: "What rule/incentive would make this parameter self-adjust?"
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- Level N+2: "What information would make people want this outcome?"
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- Level N+3: "What goal would make this rule unnecessary?"
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- Level N+4: "What paradigm shift would make this goal obvious?"
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**Example: "Raise salaries to retain engineers" (Level 12)**
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- Level 11: Add buffer (retention bonuses, unvested stock)
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- Level 10: Change structure (career paths, project diversity)
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- Level 9: Speed feedback (monthly check-ins vs annual reviews)
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- Level 6: Add information (transparent growth paths, impact visibility)
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- Level 5: Change rules (promotion criteria value mentorship)
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- Level 3: Change goal ("Retain engineers" → "Be worth staying for")
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- Level 2: Change paradigm ("Engineers as resources" → "Engineers as investors")
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## Risks and Prerequisites by Level
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### Low Leverage (12-10): Low Risk, Low Reward
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**Risk:** Wasted effort, treats symptoms
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**Prerequisites:** None, safe to experiment
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**When to use:** Quick wins to buy time for deeper fixes
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### Medium Leverage (9-7): Moderate Risk and Reward
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**Risk:** Unintended consequences if feedback loops misunderstood
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**Prerequisites:** Map system structure first
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**When to use:** When structure is sound but dynamics are problematic
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### High Leverage (6-5): High Reward, Moderate-High Risk
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**Risk:** Gaming, resistance, backfire if incentives misaligned
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**Prerequisites:**
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- Leadership buy-in for information transparency
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- Understand current incentives and power structures
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**When to use:** When structure is right but behavior is wrong
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### Highest Leverage (4-1): Highest Reward, Highest Risk
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**Risk:** Massive resistance, confusion, destabilization during transition
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**Prerequisites:**
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- Psychological safety (especially for goal/paradigm shifts)
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- Organizational readiness for fundamental change
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- Clear communication of "why" and "how"
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- Patience for long time horizons (6-18 months)
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**When to use:** When lower leverage points have failed repeatedly, or starting fresh
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**Critical warning:** Don't shift paradigms or goals under extreme time pressure - you'll get compliance without commitment, and revert as soon as pressure eases.
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## Red Flags - Rationalizations for Avoiding High Leverage
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If you catch yourself saying ANY of these, you're optimizing for ease over impact:
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| Rationalization | Reality | Response |
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|-----------------|---------|----------|
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| "Too urgent for high-leverage thinking" | Urgency is exactly when leverage matters most | Use parameters tactically while addressing root cause |
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| "High-leverage is too slow" | Low-leverage that fails is slower (months of firefighting) | Multi-level: immediate + high-leverage in parallel |
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| "High-leverage is too risky" | Repeating failed low-leverage attempts is riskier | Assess prerequisites, mitigate risks, start with pilots |
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| "I don't have authority for this" | Confusing authority with influence | Build case through information, demonstration, evidence |
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| "Let's just do what we can control" | You're self-limiting your sphere of influence | Senior ICs can influence goals via information and pilots |
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| "Leadership won't listen to this" | You haven't made the cost visible yet | Level 6 first (information), then propose change |
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| "This is too academic for real world" | Systems thinking IS pragmatic - it fixes root causes | Show evidence from companies that solved similar problems |
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**The pattern:** Rationalizations always push toward low-leverage interventions because they feel safer and more controllable. Recognize this as a cognitive bias, not a valid reason.
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## Common Mistakes
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### ❌ Parameter Tweaking Marathon
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**Symptom:** Adjusting numbers repeatedly without improvement
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**Why:** The structure generating the problem remains unchanged
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**Fix:** Map system structure, identify which feedback loop or rule is actually causing behavior
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### ❌ High-Leverage Intervention Without Foundation
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**Symptom:** Changed goal/paradigm but nothing else changed
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**Example:** Announced "blameless culture" but still punish people for mistakes
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**Why:** Goals and paradigms need supporting information, rules, and structure
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**Fix:** Work down from high-leverage point - align rules, information, and structure to new goal
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### ❌ Ignoring Resistance as Signal
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**Symptom:** People resist high-leverage change, so you double down with mandates
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**Why:** Resistance often indicates misaligned incentives or missing prerequisites
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**Fix:** Listen to resistance, identify what needs to change first (usually rules or information)
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### ❌ Confusing Effectiveness with Feasibility
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**Symptom:** "Changing paradigm is too hard, let's just adjust parameters"
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**Why:** You've optimized for ease, not impact
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**Fix:** Be honest - are you avoiding high-leverage because it's hard, or because it's genuinely wrong?
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### ❌ One-Level Thinking
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**Symptom:** All your solutions at same level (usually parameters or rules)
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**Why:** Stuck in habitual mode of thinking
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**Fix:** Force yourself to generate one solution at each level before choosing
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## Real-World Impact
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**Example: Reducing Deployment Risk**
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| Level | Intervention | Result |
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|-------|--------------|--------|
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| 12 (Parameters) | Require 3 approvers instead of 2 | Slower deploys, same risk |
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| 10 (Structure) | Add staging environment | Catches some issues, adds delay |
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| 9 (Delays) | Faster CI/CD | Faster feedback, same quality |
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| 8 (Balancing) | Automated rollback on errors | Limits blast radius |
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| 7 (Reinforcing) | Feature flags enable gradual rollout | Compounds learning |
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| 6 (Information) | Real-time impact metrics visible | Teams self-correct faster |
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| 5 (Rules) | Deploy on-call engineer's code first | Aligns incentives with quality |
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| 4 (Self-org) | Teams choose deploy frequency | Adapts to team maturity |
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| 3 (Goals) | "Maximize learning velocity" → "Sustainable pace" | Changes risk tolerance |
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| 2 (Paradigm) | "Deploys are risky" → "Deploys are learning" | Fundamental reframe |
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**Outcome:** Level 2 change (paradigm) with Level 6 (information) and Level 5 (rules) support achieved 10x deploy frequency with 50% fewer incidents. Parameter tweaking (Level 12) would have achieved nothing.
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## When Lower Leverage Is Actually Right
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**Paradox:** Sometimes parameters ARE the right intervention.
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**When to use low-leverage points:**
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- **Emergency situations:** Parameters are fastest (add servers NOW to handle load spike)
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- **Well-designed systems:** Structure is already optimal, just needs tuning
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- **Experimentation:** Cheap to test parameters before committing to structural changes
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- **Buying time:** Quick parameter fix creates space to work on high-leverage changes
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- **Constraint satisfaction:** You must hit a number (compliance, SLA) regardless of philosophy
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**Key distinction:** Using parameters **tactically** (temporary, buying time) vs **strategically** (thinking it's the real solution)
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## Integration with Other Patterns
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**Leverage points + System Archetypes:**
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- Archetypes reveal WHICH leverage point to target
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- "Fixes that Fail" → intervention is too low-leverage
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- "Shifting the Burden" → symptom relief (low leverage) prevents root cause fix (high leverage)
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**Leverage points + Unintended Consequences:**
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- Higher leverage = more widespread effects
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- Always trace 2nd/3rd order effects for levels 4-1
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**Leverage points + Pre-mortem:**
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- "Our high-leverage intervention failed spectacularly. Why?"
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- Usually: Didn't align supporting levels, or lacked prerequisites
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## The Bottom Line
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**Most people solve problems at level 12 (parameters).** It's obvious, feels productive, and rarely works.
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**Systems thinkers intervene at levels 6-3** (information, rules, goals). It's counterintuitive, seems too soft or abstract, and transforms systems.
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**The skill:** Recognize what level you're at, generate alternatives at higher levels, choose based on leverage vs. readiness, then align all supporting levels.
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**The discipline:** Resist the urge to tweak parameters when structure is the problem.
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