>[!abstract] >In chaos theory, the butterfly effect is the sensitive dependence on initial conditions in which a small change in one state of a deterministic nonlinear system can result in large differences in a later state (Wikipedia, 2025). >[!related] >- **North** (upstream): [[Nonlinear system]] >- **West** (similar): — >- **East** (different): [[The other butterfly effect]] >- **South** (downstream): —