Initially, a single pixel is colored red, in the center of the square. (Make sure your screen is clean!)

A hailstorm of black pixels passes by. When a black pixel appears adjacent to a red pixel, it "sticks," and turns red.

What do you expect the ultimate shape to look like?

Increasingly, systems with inherent with possible randomness and seeming complexity will be important for us to understand. What mathematical models do we need to develop to understand the dynamics of such systems?

Source code

Built with Processing by duane a. bailey for a QEM Workshop on Math and Biology