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Perhaps the most revealing of all David Oates’ books, It’s Only A Metaphor documents the 1987 discovery of what is now known as Reverse Speech. Inside reveals the often unnerving and sometimes downright frightening trials its author encountered along the way. Written in two parts, two decades apart, this book is a compelling read. It looks in great length at the research behind Reverse Speech, with almost forensic attention to accuracy and transparency - a standard many so called “proven” theories fall short of.