Ted did his bombings from 1978 to 1995. His manifesto ended up being 35,000 words long but the main thrust of the idea, as taken from Wiki, is the following.
Kaczynski states that technology has had a destabilizing effect on society, has made life unfulfilling and has caused widespread psychological suffering.[89] He argues that because of technological advances, most people spend their time engaged in useless pursuits which he calls "surrogate activities", wherein people strive towards artificial goals, such as scientific work, consuming mass entertainment, following sports teams, etc.[89] He predicts that further advances in technology will ultimately result in "extensive genetic engineering of human beings, so that man in the future will no longer be a creation of nature, or of chance or of God," and that "social systems will not be adjusted to suit the needs of human beings. Instead, human beings will be adjusted to suit the needs of the system."[89] He states that "[m]any people understand something of what technological progress is doing to us yet take a passive attitude towards it because they think it is inevitable. But we don't think it is inevitable. We think it can be stopped,"[90]
How close is he, or how accurate is he to today's world? I think he's spot on concerning where society has gone as a result of our industrial revolution and then technological revolution. Computers and entertainment have become ubiquitous in society. We have an epidemic of fat kids because most of them don't go outside anymore, they play on ipads and computers and their friends are mostly online friends for many of them. That's just one example of dozens of negative effects that Kaczynski feared.
I find the guys story incredibly fascinating because he was a math prodigy, attended Harvard, was a professor at University of California, Berkeley at the age of 25. That's the youngest professor ever hired by the University of California at Berkeley. He was a P.h.D. in Mathematics. How smart was Ted? Check this out. When he wrote his dissertation on Boundary Functions, his dissertation advisor had this to say about it.
Kaczynski's doctoral thesis was entitled "Boundary Functions".[32] Regarding the thesis, Kaczynski's doctoral advisor Allen Shields stated it was "the best I have ever directed".[30] Maxwell Reade, a retired math professor who served on Kaczynski's dissertation committee, also commented on the thesis by noting, "I would guess that maybe 10 or 12 men in the country understood or appreciated it."[31
My point here is what happened in this guy that made him end up the way he did. Was he so smart shit just drove him nuts or what? This is not your normal lowlife killer story. Kaczynski's story is unusual in scope.