Efficacy Guide
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The Efficacy System

engage.re answers the question: "What is working to solve humanity's problems, and how do we know?"

The Core Metaphor: Tide & Boats

The Tide
Total observed change — what actually happened in the real world among tracked participants. "312 unemployed → employed transitions in Hackney"
The Boats
The portion of change that initiatives claim contribution to. "214 transitions credited to known strategies"

The Gap (98) represents natural improvement, external factors, and untracked causes. This honesty is a feature, not a bug.

What engage.re Is — and Isn't

engage.re IS

  • A contribution tracking system
  • Recording attribute changes on users and entities
  • Linking changes to participating initiatives
  • Aggregating claims from local → national → global
  • Enabling comparison of different approaches

engage.re IS NOT

  • A population statistics system
  • Claiming causation ("X caused Y")
  • A replacement for rigorous research

If engage.re shows "500 unemployed in Hackney", it means 500 tracked users — not the actual unemployment rate.

Two Separate Systems

Outcome Tracking

"Who helped produce this change in the world?"

When a user finds employment or an air quality sensor shows improvement, we record the change and ask what initiatives contributed.

See: Tracking and Attribution

Input Equity

"What has each team member contributed to this initiative?"

Track time, money, knowledge, and other resources that participants invest — enabling fair recognition and equity distribution.

See: Equity

The Foundation: Contribution Analysis

Based on John Mayne's methodology (1999), used by UNDP, IUCN, and major foundations worldwide.

In complex systems, proving that X caused Y is often impossible. Too many factors interact in unpredictable ways.

Contribution analysis asks instead: "Was X a plausible contributor to Y?" — both more honest and more useful for decision-making.