Editing Diffusion and Influence (section)

== <span style="color: #FFFFFF;">Remembering</span> ==
* '''Diffusion''' — The process by which an "Innovation" or "Idea" is communicated over time among the participants in a social system.
* '''Contagion''' — A "Social infection"; the "Automatic" spreading of an emotion or behavior through a crowd.
* '''Threshold Model''' — The idea that you will only "Adopt" a new behavior if "X number of your friends" have already done it (e.g., you won't buy a new phone until 3 of your friends have one).
* '''Cascade''' (Information Cascade) — When people make the "Same choice" as those before them, regardless of their own private information (e.g., following a crowd into a restaurant).
* '''Seed Node''' — The "First person" who starts the spread (The "Patient Zero").
* '''Influencer''' — A node with "High Centrality" (usually Degree) who can "Trigger" a large cascade.
* '''Social Reinforcement''' — The "Strength" of the spread increases when you hear it from "Multiple" people you trust.
* '''Viral Coefficient (K)''' — The number of "New people" each person "Infects." If K > 1, the spread is "Exponential."
* '''The 'Critical Mass'''' — The "Tipping Point" where enough people have adopted an idea that it becomes "Self-Sustaining" and spreads to everyone.
* '''Churn''' — The "Rate of loss" (when people stop using the product or "Recover" from the virus).
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