How can someone know this? I didn’t realize that folks could see when a file was uploaded unless they were the ones doing the uploading and noted the time and date in their FTP client.
You're correct. You can't, unless the server is configured to allow access to the directory listing via HTTP or FTP. I don't believe that's the case with the Bomford site. Whoever it was who made the claim simply mistook the time/date stamp in his download directory for the document creation date.
Frankly, a lot of the comments on this thread have make my teeth itch just to read them. This whole thread is dumb. The differences between the two documents in the OP were obviously caused by JPEG artifacts resulting from one of the being a low-res copy.
Yeah, tyke. We're all dumb on this thread. You are the smart one.