How easy is it to create a cipher which is very hard to break?

[Mark Knowles]

In one sense the filler text point is obvious. Filler text could cover the whole of the Voynich and so we would have a nonsense text manuscript. There could be just one word which is meaningful in the whole of the Voynich. Or there could be just one sentence that is meaningful. Or a total of one meaningful paragraph altogether. Now I am not suggesting in practice that there is such a small amount of meaningful text, but I am just trying to illustrate how the application of filler text can easily be used to mask a message, the greater the proportion of filler text the simpler the masking.