by Una Hearne. The immediate results of any one action are usually fairly predictable. Think of putting your glass back on the table after drinking, usually this results in the glass being on the table. It generally doesn't leap off the table or turn into a cow. However, even a little complexity very quickly makes results unpredictable. For example, if I drive to the next town, which route will be quicker? This depends on the traffic, traffic lights, other people's driving and many other things not in my control. I have to take ...