Library / Networks / Preferential Attachment
Preferential Attachment
New links favor already-linked nodes, manufacturing power laws from pure growth.
INTERACTIVE LAB
Tolerance sandbox (original recreation)
happy 76% • avg. similar neighbors 49% • red ring = wants to move
NETWORKS
When to use / misuse
Use → Citations, followers, city pull. Seed early visibility deliberately.
Difficulty → Core
REDCAPE → Explain · Predict
agent: preferential-checker family: Networks combine_with: [two other families] rule: state failure mode before acting
Free sources: SFI Fractals & Scaling
Attach to a lattice — combines with
Different families, shared jobs. Click to open alongside.
GROWTH
Exponential & Solow Growth
Compounding plus capital, labor and ideas explain why some economies stall.
SHARED JOBS: EXPLAIN · PREDICT
DIFFUSIONPercolation / Tipping Points
Sparse links suddenly gel into a giant component — bank networks and blackouts tip fast.
SHARED JOBS: EXPLAIN · PREDICT
DISTRIBUTIONSPower Law / Long Tail
Rich-get-richer: a few huge winners, many tiny players. Straight line on log-log.
SHARED JOBS: EXPLAIN · PREDICT
More in Networks
Schelling Segregation
Mild individual preference for similar neighbors aggregates to stark city-wide segregation.
Granovetter Threshold
Each person has a riot threshold; cascades depend on the distribution, not the average.
Standing Ovation (Page–Miller)
Quality plus sightlines plus personal thresholds explain why crowds stand — or don't.