“ What? ” demanded Lilith, almost in a shriek.
“At least we think we’ve found it. Bug is programming it into MindReader right now. He says that we should have a full translation within hours.”
Lilith shook her head. “We’ve spent years trying to make sense of it, and we have looked at the Codex as well. There is no key to the ciphertext.”
“There is,” insisted Circe, “and it’s in the Voynich manuscript. Rudy figured it out. Or, he kicked off the line of thinking that’s brought us to this point. He said that we’re overthinking this. You see, if the Book is the history of the Agreement, then the Red Order and the Tariqa want their members to be able to read it. Otherwise… why write it down?”
“Makes sense,” I said. “How does it help us, though?”
“Well, we backed up and looked at the issues of translation from the perspective of two ideologies, two cultures who are effectively at war on a permanent basis. They have different customs, different languages, different points of reference on virtually everything… except one. There is one area in which all advanced cultures can agree, language differences aside.”
I had no idea where she was going with this, but Church and Lilith said it at the same time.
“Math.”
“Math,” agreed Circe. “The Voynich manuscript and the Book of Shadows are written in an invented language that has order and structure to it. Therefore it has mathematical predictability as long as anyone who tries to read it has a set of precise, immutable guidelines.”
“Such as a ciphertext,” I said.
“Yes. And the third book in our mix, the Saladin Codex is a book on understanding the science and functions of math.”
Chapter Ninety-Three
Arklight Camp
Outskirts of Tehran
June 16, 3:15 a.m.
Circe was so excited that her voice bubbled out of the phone. “One of the reasons historians never paid much attention to the Saladin Codex is it was widely regarded as a well-intentioned and fundamentally flawed set of theories about math. The author was so well-respected that the book was given a place of honor in a museum, but it was an open secret that al-Asiri was no true mathematician. Certainly not by the exacting standards of the Muslim world, and let’s remember that they invented algebra.”
“Is the math in the Codex actually flawed?” I asked.
“Yes, but now we no longer think that al-Asiri made a mistake. We think that he made a very precise set of deliberately flawed computations. Thousands of them. And somewhere in those flawed numbers is the key to the ciphertext.”
“How’s the Voynich book play into it?” asked Church.
“There are celestial charts and drawings all through that book. We know that algebra and trigonometry are used in celestial charting and navigation. The connection seemed obvious, or so I thought. Anyway, I had Bug use MindReader to plot the positions of the celestial charts in the Voynich manuscript, but we got error after error because the diagrams are wrong. The astrological star patterns in the Voynich book aren’t exactly in the right place. Scholars had dismissed this as the errors often found in old sky maps made before the invention of ultraprecise telescopes.
“Then Bug had the idea of trying those same calculations based on algebra and trigonometry as it appears in the Codex. Al-Asiri’s calculations have long been decried as bad math. They aren’t. They’re brilliant math, but they’re deliberately flawed math. When we charted the same astrological star patterns using al-Asiri’s skewed mathematics, they matched exactly with the star patterns in the Voynich manuscript.”
Church and Lilith looked stunned. So did many of the Mothers.
“Um,” I said, “speaking on behalf of C students in math everywhere, what the hell are you talking about?”
“Joe,” said Circe, “math is an exact science. However if you build a flaw into it, then the flaw becomes an exact flaw and every computation is exactly wrong in the same way.”
“So what? How does that help us?”
“If you look at the errors, you have a key to understanding math from a certain perspective. You can actually use al-Asiri’s errors to do proper calculations. That predictability and regularity is a cipher. It’s a key to understanding anything else that is based on the same code. We began applying it to other drawings in the Voynich manuscript. A predictable mathematical sequence is one of the most common replacement ciphers. We applied it to English and got nowhere. We tried French as it was spoken in the twelfth century, and nothing. The same thing with Arabic and Persian. Nothing. Then we thought about commonalities. Charles LaRoque and Ibrahim al-Asiri were diplomats as well as deeply religious men. They were creating an agreement designed to preserve their churches, correct? So, in what language would these men write that agreement? We thought they might have written it in Hebrew, the original language of the Old Testament, but LaRoque was a Christian and al-Asiri was a Muslim, and Hebrew was the language of the Jews. Both men would probably have had some anti-Jewish sentiments. The Bible was often translated into Greek and Aramaic. And Aramaic was the language of diplomacy throughout the Middle East for a thousand years, and virtually all Middle Eastern languages can be traced back to it; and the Aramaic alphabet was eventually adopted for writing the Hebrew language. Formerly, Hebrew had been written using an alphabet closer in form to that of Phoenician. Everything fit. We now know that Aramaic is the language used to write the Holy Agreement.”
Lilith seemed unable to speak, but she finally croaked out a question. “And the cipher?”
“We hit one last hitch. MindReader was able to translate the first page of the Book of Shadows, which is mostly introductions of Sir Guy LaRoque and Ibrahim al-Asiri and their various titles and political affiliations. Typical diplomatic stuff and not of any use to us because we know who they were.”
“Damn,” growled Violin, and a wave of disappointment began sweeping through the Mothers and Echo Team.
But Circe was not done. “The code is devious; it changes incrementally. MindReader’s pattern search figured this last part out. On the first page of the Book of Shadows, the mathematical error was exactly as described in the Codex. However, on the second page, the error is doubled, then tripled on the third page, and on and on until you get to page ten, then it resets to the first error. With that last piece, we can now calculate the rate of error and use those errors to create a key to crack the ciphertext.” She took a breath. “The Book of Shadows and the Voynich Manuscript are ours.”
“Good God,” murmured Church. “This is brilliant work, Circe.”
“Rudy and Bug did as much as I did,” she said.
“I will thank you personally when I see you,” he said. “Bug, how soon before MindReader deciphers both books?”
“Two hours. Because the books are handwritten, and by more than one person, it has to adjust to variations in the way the coded documents were phrased.”
“Do what you can to speed that up. Call me when you find anything, and I do mean anything.”
He disconnected the call and stood silent, his jaw tight, mind working. Lilith had the same inward-looking expression. Maybe we all did. No one said anything. This was massive news to Church and the Mothers, but I felt like I was on the fringes of it. Maybe it would help Arklight-with or without the help of the DMS-take down the Red Order and the Tariqa, but that seemed to be tomorrow’s battle. I didn’t see how the translation of old books was going to help us find nukes today.
Then Church’s cell rang again. Everyone came to point like a pack of retrievers, but it wasn’t Circe. Church listened for a moment and then said, “Very well.”
He closed the phone and looked at me.
“That was the president,” he said. “The word is given. The mission is a go.”
Chapter Ninety-Four