Markov chains: http://en.wikipedia.org/wiki/Markov_chain http://en.wikipedia.org/wiki/Markov_chain Imagine picking letters with the right frequencies. Now, in

Markov chains: http://en.wikipedia.org/wiki/Markov_chain http://en.wikipedia.org/wiki/Markov_chain Imagine picking letters with the right frequencies. Now, instead of doing that, pick pairs of letters, with the right frequency, so that each pair "chains" with the previous. If you have good pair frequency data, you can do longer than pairs and get even closer to English.