The Larger Lesson Here Is...
The evils of feature creep. If PDF had been kept to its original purpose, we'd be fine. But Adobe couldn't leave it alone and wanted to start making their static documents dynamic. IMO that change from static to dynamic is what destroyed the web, made it perform like shit, and opened up tons of security holes. Geniuses that they are, Adobe copied this static to dynamic change in the web to their Portable Document Format, forgetting that the very nature of a document is STATIC. It is to *document* the state of something at a point in time. There is no reason for links, Javascript, dancing GIF animations or whatever crap the markettards want to introduce to try and sell me their overpriced, unexciting crap. Adobe has simply made the exact same mistake that pretty much the entire web has made, so as utter failures go they aren't even original, they are just copycat failures.
Adobe adopted the idea that PDF was a container for offline web information so they wanted to be able to bundle up all the features of the web (viruses included but not intended) into a compact portable format. Knowing all the investment they had in dynamic content from stuff like Macromedia it was obvious they wanted to be able to deliver animated flash presentations and shit like that in a PDF, they probably saw it as a PowerPoint killer. Well, they succeeded at bundling up all the (destructive) power of the web into an easily portable format for exchange. They succeeded so well they have now become one of the primary conduits for malware.
Kudos Adobe!