It's worth keeping in mind that the building blocks of today's web, particularly HTTP and HTML, were developed by academic researchers. One thing that academic researchers have to do, a lot, is follow references, because most academic work builds on, critiques and otherwise refers to existing work.
Let's take a moment to appreciate what that meant before the web came along. Suppose you're reading a reference work and you run across a reference like this:
4. Ibid, 28-3
That is, you've just run across a passage like this totally made-up example:
It is also known that the shells of tropical snails vary widely in their patterning4.
That little raised 4 tells you to skip to the bottom of the page and find footnote 4, which says "Ibid, 28-3", which means "look in the same place as the previous footnote, on pages 28 through 33". So you scan up through the footnotes and find
3. Ibid, 17
OK, fine ... keep going
2. McBiologistface, Notes on Tropical Snails, 12-4
OK, this is something previously referenced, in particular something written by McBiologistface (likely the eminent Biologist McBiologistface, but perhaps the lesser-known relative General Scientist McBiologistface). Keep going ...
1. McBiologistface, Something Else About Tropical Snails, 254
OK, looks like this person wrote at least two books on tropical snails. The one we're looking for must be referenced in a previous chapter. Ah, here it is:
7. McBiologistface, Biologist, Notes on Tropical Snails (Hoople: University of Southern North Dakota at Hoople Press, 1945), 32-5
Great. Now we know which McBiologistFace it was, and which edition of which book published by which publisher. Now all we have to do is track down a copy of that book, and open it to ... let's see, what was that original reference? ... oh yes, page 28.
To be fair, "McBiologistface, Notes on Tropical Snails" from reference 2 is probably enough to find the book in the card catalog at the library, and if a reference is "Ibid", you may already have the book and have it open from following a previous reference to it. It's also quite possible that your department or office has copies of many of the books and journals that are likely to be referenced.
Nonetheless, thinking of the tasks I mentioned when describing the Olden Days -- navigating an unfamiliar place, communicating by phone, streaming entertainment and searching up information -- simply following a reference from one book or article to another could be more work than any of them.
Even answering a question like "where was the touch-tone™ phone invented" would have been easier, assuming you didn't already have a copy of Notes on Tropical Snails on hand: go to the library, walk right to the easily-located reference section that you've already been to, pull out the 'T' volume of one of the encyclopedias, flip to Telephone and chances are your answer is right there (or you could just ask someone who would know).
To find the reference on snails, you'll have to look up the book in the card catalog, note down its location in the stacks, go there and scan through the books on those shelves until you find the book itself (and then open it and flip to the right page, but you already know that from the reference). This is all assuming there's a copy of the book on the shelves that no one's checked out (who knows, maybe there's been a sudden interest in tropical snails in your town). Otherwise, you could call around to the local bookstores, or your colleagues and friends, to see if anyone has a copy. If not, your favorite bookstore could special-order a copy from the publisher, and with luck it would be there in a few days.
Chasing a link in an HTML document is more or less instant. You can probably see the appeal.
My point here is that the interlinked nature of the web, that ability to click on a link, immediately see what's on the other end and easily get back to where you were, was an absolute game-changer for the sort of people who created the early web. Your own milage may vary.
To make this work, you need a few key pieces
- A way of referencing data that's available on the network (URLs)
- A way of embedding URLs in a body of text, similar to the way footnotes are embedded in ordinary text (HTML)
- Ideally, a standard way of accessing something referenced by a URL (HTTP)
http://
URLs (or later, https://
) quickly came to dominate.
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