There is a common misunderstanding that the scientifically accepted explanation for the existence of life on Earth (Darwinian Natural Selection) is based upon an idea of life suddenly springing into action, purely by chance. This idea is relentlessly spread by people who either do not understand the concepts involved, or who have some kind of agenda against public understanding of them.

I have made this simulator to demonstrate the enormous difference between chance creation and cumulative evolution. Richard Dawkins uses the terms "single step" and "multiple step" evolution, which I think accurately describe what is going on. With the simulation, I have also provided a simple calculator to show how long the evolution might have taken using single step evolution.

The function of the simulator is quite simple. The user enters a target word or sentence, and the simulator will generate a random starting point (a string of the same length and made using the same alphabet). It will then proceed to go through a series of "generations". Each time, it will generate two very slightly different mutated "children" of the current generation, and pick the child that is most similar to the target string. In this way, the generations become more and more like the target, and eventually reach it.

Users should note that there are important differences between this simulator and real natural selection. Real natural selection is not aiming for a long term target, but is instead blind to the future, making decisions only on short term improvements (namely, reproductive ability).