This blog has been a little too serious and so I have prepared a "buggy" little model that you can run in your browser. To a large extent the complexity sciences have been developed to explain natural systems. Recently, I had the opportunity to sit in on a class about "systems biology". As my contribution I developed a multi-scale based simulation model of Bacterial Chemotaxis.
By multi-scale I mean that parts of the model use "Systems Dynamics" modeling and other parts are agent based. In this model each bacteria is an "agent" that encapsulates the structure that causes the chemotaxis behavior.
Clicking on this link will open the model as a Java Applet that will run inside your browser. I hope you enjoy running experiments on the little bacteria inside your computer Please don't let them out! Be sure to try the drop-down window to drill down into a bacteria and see how it's innards are constructed.