Compressing encrypted data-you can’t get there from here

Several people have graciously noted (and several less so) that by including encrypted data in the list of what could be compressed, I committed a mathematical faux pas. They are absolutely correct. While I knew enough about compression to know that 25x is way beyond what the redoubtable Claude Shannon proved possible, I hadn’t spent enough time on encryption to realize my error.

Thanks for all who took the time to flag this.

Robin