his three passengers—then-fiancée Candice Clark, her brother Jack Clark, and Jack's girlfriend, Janet Valleau—were injured. Wozniak sustained severe face and head injuries, including losing a tooth, and also suffered for the following five weeks from anterograde amnesia, the inability to create new memories. He had no memory of the crash, and did not remember his name while in the hospital or the things he did for a time after he was released. He would later state that Apple II computer games were what helped him regain his memory. The National Transportation Safety Board investigation report cited premature liftoff and pilot inexperience as probable causes of the crash. Wozniak did not immediately return to Apple after recovering from the airplane crash, seeing it as a good reason to leave. Infinite Loop characterized this time: "Coming out of the semi-coma had been like flipping a reset switch in Woz's brain. It was as if in his thirty-year old body he had regained the mind he'd had at eighteen before all the computer madness had begun. And when that happened, Woz found he had little interest in engineering or design. Rather, in an odd sort of way, he wanted to start over fresh." UC Berkeley and US Festivals Later in 1981, after recovering from the plane crash, Wozniak re-enrolled at UC Berkeley to complete his Electrical Engineering and Computer Sciences degree that he started there in 1971 (and which he would finish in 1986). Because his name was well known at this point, he enrolled under the name Rocky Raccoon Clark, which is the name listed on his diploma, although he did not officially receive his degree in electrical engineering and computer sciences until 1987. In May 1982 and 1983, Wozniak, with help from professional concert promoter Bill Graham, founded the company Unuson, an abbreviation of "unite us in song", which sponsored two US Festivals, with "US" pronounced like the pronoun, not as initials. Initially intended to celebrate evolving technologies, the festivals ended up as a technology exposition and a rock festival as a combination of music, computers, television, and people. After losing several million dollars on the 1982 festival, Wozniak stated that unless the 1983 event turned a profit, he would end his involvement with rock festivals and get back to designing computers. Later that year, Wozniak returned to Apple product development, desiring no more of a role than that of an