It's interesting how some basic permutations (not being a pure rectangle for the second chunk) and mistakes (paradice) likely inadvertantly made the text more r

It's interesting how some basic permutations (not being a pure rectangle for the second chunk) and mistakes (paradice) likely inadvertantly made the text more robust against computerized cryptanalysis. I wonder if a number of previous efforts were just a few steps away but their computer program rejected it interpreting the mistakes as an incorrect guess