At the very beginning we should ask ourselves for which reasons we want to create an Archivista PublishingEdition. Let us assume that we want our documents to be available for a long period of time. 'Long-term' may mean lots of different things but let us think of a timespan between 20 and 50, or maybe even 100 years. This sounds like an infinite stretch of time in the world of computer technology but it is not in terms of paper documents.
Which documents will still be available at that point in time? Will we still be able to read an MS Word file properly in 20 years' time? Will the Internet still exist (admittedly a heretic question)? Where will Adobe's PDF format be? Will we still have the right to look at our own documents without a meter ticking away somewhere and intermittently making a message pop up that our account is running low?