[Jeff Winston]

Yeah, I read it. That’s what prompted my comment.

The only thing on his resume that even HINTS at computer technology is “1994-1995, Computer-Generated Handwriting and Documents.”

None of that has the remotest thing to do with how PDFs are compressed.

[Ray76]

Understandable.

Also listed are:

• Signature Verification
• Anonymous Letter Evaluation
• Detection of Document Alterations
• Computerized Document Evaluation
• Forgery Investigation
• Restoration of Erasures and Obliterations
• Indented Writing Investigation
• Typewriting Examination

(emphasis added)

http://reedwrite.com/?page_id=133

Investigation need not be limited to "PDF compression"