In 1999, Clark Elliott was a research professor with a rising career in artificial intelligence. Then he was the victim of a rear-end car collision, and his life was transformed overnight.
Simple tasks had become difficult. He sometimes had difficulty remembering his children's names. He sometimes had difficulty walking through doors, or down corridors. He had difficulty making decisions--simple decisions. A sign on a shop door saying "Come in" once held him in place for several minutes, knowing he didn't want to go into that shop, but unable to simply ignore its instruction.
