So, vellum may be on the way out in the UK Parliament
Many deep and thorny issues here.
Thought experiment: In your hand you have a 40 page document. On your computer screen you have an electronic document open in a word processor. You have been told they they are "the same document".
How can you tell? What does it even mean to say that they are the "same"? Does it matter if there is no sure-fire way to prove it?
Let us start at the end of that list of questions and work backwards. Does it matter that there is no sure-fire way to prove it? Most of the time, it does not matter if you cannot prove they are the same. Over the years since the computerization of documents, we have devised various techniques for managing the risks of differences arising between what the computer says and what the sheets of paper say. However, when it does matter it tends to matter a whole bunch. Examples are domains such as legal documents, mission critical procedure manuals, that sort of thing.
A very common way of mitigating the risk of differences arising between paper and electronic texts is to declare the electronic version to be the real, authentic document and treat the paper as a "best efforts" copy or rendering of the authentic document. If the printing messes up and some text gets chopped off the right hand margin we think "No big deal". Annoying but not cataclysmic. The electronic copy is the real one and we can just go back to the source any time we want...
...Yes, as long as the electronic source is not, itself, an ambiguous idea. Again, we have developed practices to mitigate this risk. If I author a document in, say, FrameMaker but export RTF to send to you, the FrameMaker is considered the real, authentic electronic file. If anything happens to the RTF content - either as it is exported, transmitted or imported by you into some other application - we refer back to the original electronic file which is the FrameMaker incarnation....
...If we still have it up to date. The problem is that we do not print FrameMaker or Word or Quark Express. We tend to print "frozen" renderings of these things. Things like postscript and PDF. On the way to paper, it is not uncommon for fixes to be required just prior to the creation of very expensive printing plates. If something small needs to be fixed, it will probably get fixed at 2 a.m. in the postscript or PDF file...which is now out of sync with the original FrameMaker file...
...Which, come to think of it, might not have been as clear cut an authoritative source as I made it out to be. It is not uncommon for applications like FrameMaker, Adobe CS2, Quark etc. to be used downstream of an authoring process that utilizes Microsoft Word or Corel Wordperfect or OpenOffice or some Webb-y browser plug-in.
If (i.e. when) errors are found in document proofs the upstream documents should really be fixed and the DTP versions re-constituted. Otherwise, the source documents get out of sync with the paper copy very quickly indeed. Worse, the differences between the source documents and the paper copy may be in the form of small errors. A period missing here, a dollar sign there...Small enough to be very hard to spot with proofreading but large enough to be very serious in for example, legal documents.
What to do? Well, we need to freeze-dry "cuts" of these documents to remove all ambiguity and then institute rigorous policies and procedures to ensure that changes are properly reflected everywhere along the document production toolchain...
...Which, these days, can be quite a complicated tool chain. For example, it is quite likely that web page production is feeding off the content prior to when it goes in to the DTP program. So, when a fix is needed you need to chase down all copies made and fix them, preferably all at the same time. Oh, and tools for editing (yes, I did say "editing") PDF documents are becoming more and more commonplace. So much for simple freeze-drying of digital content...
...Wait. This is getting too complex and has too many points of human intervention which introduces costs and the potential for human error. Best to simplify the tool chain...
..Yes, that would be nice but unfortunately DTP packages do useful things - things that word processors do not do. Word processors do useful things - things that Webby-plugins cannot do. Layout formats like PDF, Postscript, SVG do things that authoring formats like ODF do not do. HTML can be both a layout format and an authoring format but only at the expense of leaving behind a lot of very useful stuff for large document publication...
...So, where does that leave us? Well, behind that beautifully produced 40 pager you hold in you hand we have, roughly speaking, umpteen different electronic variations of it. Each of which may or may not be "the same" as the paper in a variety of subtle and (to me anyway) interesting ways...
...We have a problem. Consider this, search around the Web for companies offering data capture services from paper. Lots to choose from right? Now where do you think all that paper is coming from? Old, old content that pre-dates computerization? No. Some of it falls into that category but only some. Filled in, paper based forms that do not exit in computers at all? Yes, there is a bunch of that. But a lot of it is content that came into existence purely electronically, at some stage over the last 30 years. It passed through some complicated tool chain and workflow on its way to paper. The paper then became the only reliable incarnation of the content. Any electronic versions of it that the owners could dig out were found to be potentially flawed in some way... (cannot read them, cannot trust them to be the same as the paper etc. etc.)
...Thus the need to capture the content from paper. An exercise which, even with rigorous QA to say, 99.998% accuracy, is guaranteed to introduce its own set of errors...
It is messy, right? Well, get rid of the paper/vellum's, get rid of the witnessing/signing formalisms that have evolved over centuries, and I think you create an even bigger problem.
Solution? Tamper evident digital audit trails.
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