The Butterfly Effect

It was 1960 and meteorologist Edward Lorenz was working in his lab. He was entering data into his computer in the hopes of modeling weather patterns when he stumbled upon a theory that is known as 'The Butterfly Effect'. He was entering wind speed, air pressure and temperature into three separate equations that were linked in a mathematical feedback loop. This equation allowed Lorenz to predict weather patterns.

One day Lorenz was in a bit of a hurry and opted to take a shortcut when entering the data. He rounded the numbers to the nearest one thousandth rather than to the nearest one millionth (for example, .407 instead of .407349). As a scientist, he knew this would change the result – however he expected only a minor change. Lorenz was astounded to discover that this tiny change made a profound impact on the final resulting weather pattern. This discovery led Lorenz to ponder: Does the flap of a butterfly's wing in Brazil cause a tornado in Texas? – Thus you have 'The Butterfly Effect' theory.

This theory has been applied to all areas of science since Lorenz's 1960 experiment.