David Weinberger writes about Data and Meta data in the Third Age of Order. Something that I found very profound.
There used to be a difference between data and metadata. Data was the suitcase and metadata was the name tag on it. Data was the folder and metadata was its label. Data was the contents of the book and metadata was the Dewey Decimal number on its spine. But, in the Third Age of Order, everything is becoming metadata.
Why does this matter? It changes the primary job of information architects. It makes stores of information more useful to users. It enables research that otherwise would be difficult, thus making our culture smarter overall. But, most interestingly (at least to me), this does the ol’ Einsteinian reverse flip to Aristotle. Aristotle assumed that of the 10 categories by which one could understand a thing, one must be primary: Where that thing fits into the tree of knowledge. So, you could say that Alcibiades is made of flesh or lived in Greece, but if you really want to understand him, you have to say that he is an animal of a particular kind. But, now that everything is metadata, no particular way of understanding something is any more inherently valuable than any other; it all depends on what you’re trying to do. The old framework of knowledge — and authority — are getting a pretty good shake.