The past week two members,
Anderson110 and Holmes201, made some interesting and I think important discoveries, and I have some comments on them.
Anderson110: (I find compelling) the connection between Kaczynski's academic work and the Zodiac's signature symbol, and his treatment and contextual use of the symbol in some of his communications.
Kaczynski did not publish a lot of articles while he was an academic. In the handful of papers he did publish, the vast majority of his work focused on functions defined on the Cartesian plane in real or complex space, with a particular emphasis on functions defined over the unit disc. An illustration of the unit disc on a Cartesian plane is *precisely* the Zodiac's calling card symbol.
AK Wilks: These are good points. Here are two images I got when I searched for Unit Discs - Unit Circles on a Cartesian Plane.

You are right. The subjects of years of Ted's research, the subjects of his PHD dissertation, do look almost identical to the Zodiac symbol. In fact Ted has a history, if not obsession, with crossed lines inside circles. He drew one as his signature in a school yearbook, he studied them at college. they were the subject of his PHD dissertation and he drew one at a crime scene.

There are strong overlaps between Ted's field of study and the Zodiac case, but because his field of study is so complex and not understood well by lay people, it hasn't been explored much. Doug Oswell noted the strange similarity between the My Name Is Code and a formula line that appeared in a Ted K paper.

Kaczynski wrote that his theorem was proved by a "rather messy" lemma in his paper that was published in July 1969 in a mathematical journal. In November 1969 the Zodiac declared that it could get "rather messy" if the police tried to bluff him.
And to me, what remains very compelling is that there were exactly two twentieth century serial killers who made bomb threats, demanded their words appear in newspapers or innocents would die, threatened mass transit, wrote about killing or wanting to kill couples, used guns with flashlights attached, created hand made black hoods with rectangular eye slits, used over 20 of the same words and phrases, handwriting showed 3 stroke K's, 5 stroke M's, checkmark r's and felt compelled to draw at crime scenes circles with crossed lines inside the circle extending outwards. The symbol Ted drew at the Unabomber crime scene, in addition to being very similar to the Zodiac symbol, translates to the letter Z, as you can see on the translation chart. Also shown is the handmade flat top black hood with rectangular eye slits, very similar to the Zodiac hood.



The other interesting and important discovery this week was by
Holmes201. He found out that in 1959, when Ted K was attending Harvard, a production of the Mikado occurred.

AK Wilks: Excellent find Holmes 201. I had never been able to find proof that Ted K was exposed to The Mikado. This is proof, for the first time, that Ted was exposed to it and had an opportunity to see it. I would venture he did likely see it. Not only because it might have fulfilled a credit for a mandatory arts class. Ted K was in fact a fan of opera. He writes about his love for Wagner's Ring Cycle opera, he even made allusions to it in some of his Unabomber crimes and letters. Ted K wrote that some of the reasons he liked the Ring Cycle were because it emphasized that there is virtue and strength in being chaste, and it also involved a violent struggle against modernity, themes which the Mikado also suggests in its own way. Ted K also played the tuba in HS, which I think is an instrument associated with Ko-Ko, the Lord High Executioner (who is quoted by Zodiac).