What you're seeing
A population where one person starts doing evil (red, left side) and one person starts doing good (green, right side). Both behaviors spread to nearby people through contact. Watch the two forces race across the community.
How to read the graph
Gray dots haven't been influenced yet. Red dots are actively spreading selfish behavior. Green dots are actively spreading cooperative behavior. Purple dots have been through evil or good and are now resistant — they can't be converted again. The mini chart tracks all four groups over time.
The key lesson
Evil has a speed advantage — selfish behavior is easier to copy. But good has a durability advantage — cooperation persists longer. In the long run, the force that lasts beats the force that's fast. This maps to real life: outrage goes viral but fades; kindness spreads slowly but compounds.