A considerable amount of credible circumstantial evidence<quoted text>
Not unlike nice folks like Timothy McVeigh.
He isn't with us anymore.
Ted Kaczynski seemed a smart fellow but felt an "otherness" and
preferred to live off the grid and to march to his own drummer.
Many of these folks also seem to hold a lot of resentment against society, the government, technology, whatever.
Reminds of a quote from "The Wild One" (1953) with Marlin Brando:
Mildred: Hey Johnny, what are you rebelling against?
Johnny: Whadda you got?
suggests that Theodore Kaczynski , also known as the Unabomber,
participated in CIA-sponsored MKUltra experiments conducted at
Harvard University from the fall of 1959 through the spring of
1962. During World War II, Henry Murray, the lead researcher
in the Harvard experiments, served with the Office of Strategic
Services (OSS), which was a forerunner of the CIA. Murray applied
for a grant funded by the United States Navy , and his Harvard
stress experiments strongly resembled those run by the OSS.
Beginning at the age of sixteen, Kaczynski participated along with
twenty-one other undergraduate students in the Harvard
experiments, which have been described as "disturbing" and
"ethically indefensible." 
Merry Prankster Ken Kesey, author of One Flew Over the
Cuckoo's Nest, volunteered for MKUltra experiments involving LSD
and other psychedelic drugs at the Veterans Administration
Hospital in Menlo Park while he was a student at nearby Stanford
University . Kesey's experiences while under the influence of LSD
inspired him to promote the drug outside the context of the
MKUltra experiments, which influenced the early development of