It puzzles me how anyone can think solving this cipher will reveal who the killer is. Morality aside, to have eluded police or so long, it's undeniable this was

It puzzles me how anyone can think solving this cipher will reveal who the killer is. Morality aside, to have eluded police or so long, it's undeniable this was an extremely intelligent individual. More, he was not rash. Intelligent people who do these kind of things, do not leave evidence lying around, because they realize even they can make mistakes - it's not worth the risk. If the Zodiac is dead, my bet is he never intended this cipher to be solved - and therefore it's probably gibberish. I can't see a man who has waged this kind of crusade letting himself fade into history without a single reminder of his legacy.