The butterfly effect theory is a theory that states that when a butterfly moves its wings somewhere in the world it can cause a tornado in another part of the world. This might sound like an unrealistic assumption, How can a slight change like that one result in a big one such as a tornado? "In 1960 a meteorologist named Edward Lorenz was researching into the possibilities of long term weather prediction. He created a basic computer program using mathematical equations which could theoretically predict what the weather might be. One day he wanted to run a particular sequence again, and to save time he started it from the middle of the sequence. After letting the sequence run he returned to find that the sequence had evolved completely different from the original. At first he couldn't comprehend such different results but then realised that he had started the sequence with his recorded results to 3 decimal places, whereas the computer had