The layers have been the most damning and problematic evidence of file-manipulation, and the defenders of Obama are quick to respond with a plethora of explanations to justify the presence of layers. The excuses range from OCR (Optical Character Recognition) software to the more predominant excuse of optimization -- both of which have been debunked in my previous report for the Cold Case Posse press conference. Many Obama defenders have conceded that OCR is not a factor and admit that OCR was never applied to the PDF file. However, arguments for optimization still persist. Optimization refers to a file-saving process...