one in a 16 megabytes because otherwise somebody would have long done it the reason there is a hope to be able to do better and well we'll get into how to do this soon is down in reality these letters in that file are not independent when you see first three letters you might have an easy time predicting the fourth letter because there's only so many reasonable completions of that word now you already starting to saw the first three letters off and so then the calculus becomes a little different than we get that in a moment