Another important difference is that for deterministic chaos you have
a **simple law** that will produce all the values in the attractor.
Instead for randomness there is no **known recipe ** to produce past and
future values.

We can say the same thing in other ways : for
deterministic chaos **we can compress** all the values in a simple formula, for randomness the only way to represent them is to list all of them.

The formula is the same which is used **to generate random numbers on a
computer**.
You can look at a tutorial
here.

Almost any **iteration** can become a random number generator.
Now what is the problem:let's suppose that you have the formula and you
want to know the value #1000.
The only way is to compute value 1, 2 3 ...
So the formula is no help for predicting but can become a way to store
many,many numbers in a compact way.This is the method of **fractal
compression**.

This page maintained by Giuseppe Zito: Giuseppe.Zito@cern.ch. Last revised 17 Feb 1997.