Earlier quoted context omitted.
Cipher noob question: is there any check that can be done to ensure a cipher is actually decodable? What if the author made a flaw when encoding it, so that it's not actually solvable?
Actually the article that you didn't bother to read mention a few encoding errors that Fable has been able to recover and point to the probable author's intent.
Thanks for the driveby snark though!