Houben has since proven able to answer yes-or-no questions with slight movements of his foot. It’s a tremendous accomplishment, and raises the chilling possibil

Houben has since proven able to answer yes-or-no questions with slight movements of his foot. It’s a tremendous accomplishment, and raises the chilling possibility that, as estimated by Coma Science Group leader Steven Laureys in a Monday New York Times story, as many as four in 10 people considered utterly comatose may be misdiagnosed. But the legitimacy of interviews given by Houben and his facilitator to Der Spiegel, and shown on video by the BBC, may not be as certain. He can answer questions independently with his foot. So why don't they ask him if he's answering for himself when he types? He could also learn Morse code...