Mr P, an 80-year-old Polish emigre and former engineer, knew he had memory problems, but it was his wife who described it as a permanent sense of deja vu. He refused to watch TV or read a newspaper, as he claimed to have seen everything before. When he went out walking he said the same birds sang in the same trees and the same cars drove past at the same time every day. His doctor said he should see a memory specialist, but Mr P refused. He was convinced that he had already been.
– New Scientist – March 26, 2009