Kaczynski was admitted to Harvard at age 16. As freshman he was asked to volunteer for some psychological experiments, more or less based on what was understood to be "brainwashing" in those days. After having been subjected to a series of rather brutal psychological experiments, intended to mentally break the subjects, the volunteers were left to their own devices with no option for counselling/debriefing. Not an excuse for blowing people up, but surprising that it is rarely mentioned as a possible contributing factor.
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