David Eagleman makes this argument with a series of striking examples. He tells the story of how, in 2000, an otherwise normal Virginia man started to collect child pornography and make sexual overtures toward his prepubescent stepdaughter. He was sentenced to spend time in a rehabilitation center only to be expelled for making lewd advances toward staff members and patients. The next step was prison, but the night before he was to be incarcerated, severe headaches sent him to the hospital, where doctors discovered a large tumor in his brain. After they removed it, his sexual obsessions
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I'd heard of this case before and it is truly fascinating. And it is indeed a difficult one for Cartesian dualists.
