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>As reported in David Kushner's Masters of Doom, when Carmack was 14, he broke into a school to help a group of children steal Apple II computers. To gain entry to the building, Carmack concocted a sticky substance of thermite mixed with Vaseline that melted through the windows. However, an overweight accomplice struggled to get through the hole, and opened the window, setting off a silent alarm and alerting police. 
>Carmack was arrested, and sent for psychiatric evaluation (the report mentions "no empathy for other human beings" and describes Carmack as "a brain on legs").