Evolution is a behavior that emerges in any system that has:

  1. Mutation
  2. Heredity
  3. Selection

Evolutionary systems often generate unexpected solutions. Nature selects for good enough.

There is no such thing as advantageous in a general sense. There is only advantageous for the circumstances you’re living in. — Olivia Judson, Santa Fe Institute

Evolving systems exist in punctuated equilibrium.


Resources: Evolutionary Systems on Wikipedia.