I will try once more. Because people seem to be really missing the point. The point I am trying to make is that for NOVICE users (which is the large majority of computer users our there). Opening a PDF to reference content can be confusing because the page numbers that Preview displayes don't match what is on the printed page.
Now PLEASE don't start telling me who's fault it is. I KNOW that the person who created the document can create it in such a way that the page numbers show up in Preview. That is not the point I am getting at.
The point I am trying to make is that Steve Jobs and Apple realy pushed preview when it came out and said it would be the best PDF reader our there. And in many ways it really is. It is a very nice PDF viewer. It is fast, easy to navigate etc. In many ways preview has helped a lot of people be more paperless.
But one of previews problems is that, if a novice user edits a PDF. Preview destroyes all carefully set up page numbering by the original author. The user never asked for this to happen. They just wanted to delete a page... or add a page. If preview allows for deleting and adding of pages, it should be more careful about the page numbering also.
Also, just as a reader that is focused on picking up any old ratty PDF and presenting it in the most pleasing way possible, it would be nice if preview could do more to help novice users sync up page numbers it displays with the page numbers printed on the pages they see. The truely intelligent self-aware AI PDF readers of the future will be doing this. ;-) Why not have preview make a step in that direction.
The size reduction talk was a side point, and there are many good solutions for this. But the fact that PDF has an option to reduce a PDF files size, but in doing so destroys document data, is another not so nice feature. Again, it speaks to the lack of intellegince Preview dispalys as it interacts with the user. A more intelligent program would not destroy data silently without warning the user first. When the user choose export or save, they expect all the data to be exported and saved. If preview is not smart enough to really do this, it should make that clear to the user. Export a simplified version... Save the main content... ;-) These items are very wordy and not really serious suggestions for a menu choice, but they show what Preview is actually meaning by the words Export and Save. And these meanings are not what any reasonbable thinking novice user would expect.
Only those really experienced with computer programs know that they are a liars and should never be fully trusted, especially if they are free.