Lifestream

Description

"A lifestream is a time-ordered stream of documents that functions as a diary of your electronic life; every document you create and every document other people send you is stored in your lifestream. The tail of your stream contains documents from the past (starting with your electronic birth certificate). Moving away from the tail and toward the present, your stream contains more recent documents --- papers in progress or new electronic mail; other documents (pictures, correspondence, bills, movies, voice mail, software) are stored in between. Moving beyond the present and into the future, the stream contains documents you will need: reminders, calendar items, to-do lists.

You manage your lifestream through a small number of powerful operators that allow you to transparently store information, organize information on demand, filter and monitor incoming information, create reminders and calendar items in an integrated fashion, and "compress" large numbers of documents into overviews or executive summaries.

Lifestreams had its beginnings in David Gelernter's "chronicle streams" (in his book Mirror Worlds) and was first described as a structure for managing personal electronic information in his Washington Post article "The cyber-road not taken" (http://cs-www.cs.yale.edu/homes/freeman/lifestreams.html)

Discussion

David Gelernter:

"13. The traditional web site is static, but the Internet specializes in flowing, changing information. The "velocity of information" is important — not just the facts but their rate and direction of flow. Today's typical website is like a stained glass window, many small panels leaded together. There is no good way to change stained glass, and no one expects it to change. So it's not surprising that the Internet is now being overtaken by a different kind of cyberstructure.

14. The structure called a cyberstream or lifestream is better suited to the Internet than a conventional website because it shows information-in-motion, a rushing flow of fresh information instead of a stagnant pool.

15. Every month, more and more information surges through the Cybersphere in lifestreams — some called blogs, "feeds," "activity streams," "event streams," Twitter streams. All these streams are specialized examples of the cyberstructure we called a lifestream in the mid-1990s: a stream made of all sorts of digital documents, arranged by time of creation or arrival, changing in realtime; a stream you can focus and thus turn into a different stream; a stream with a past, present and future. The future flows through the present into the past at the speed of time.

16. Your own information — all your communications, documents, photos, videos — including "cross network" information — phone calls, voice messages, text messages — will be stored in a lifestream in the Cloud.

17. There is no clear way to blend two standard websites together, but it's obvious how to blend two streams. You simply shuffle them together like two decks of cards, maintaining time-order — putting the earlier document first. Blending is important because we must be able to add and subtract in the Cybersphere. We add streams together by blending them. Because it's easy to blend any group of streams, it's easy to integrate stream-structured sites so we can treat the group as a unit, not as many separate points of activity; and integration is important to solving the information overload problem. We subtract streams by searching or focusing. Searching a stream for "snow" means that I subtract every stream-element that doesn't deal with snow. Subtracting the "not snow" stream from the mainstream yields a "snow" stream. Blending streams and searching them are the addition and subtraction of the new Cybersphere.

18. Nearly all flowing, changing information on the Internet will move through streams. You will be able to gather and blend together all the streams that interest you. Streams of world news or news about your friends, streams that describe prices or auctions or new findings in any field, or traffic, weather, markets — they will all be gathered and blended into one stream. Then your own personal lifestream will be added. The result is your mainstream: different from all others; a fast-moving river of all the digital information you care about.

19. You can turn a knob and slow down your mainstream: less-important stream-elements will flow past invisibly and won't distract you, but will remain in the stream and appear when you search for them. You can rewind your lifestream and review the past. If an important-looking document or message sails past and you have no time to deal with it now, you can copy the document or message into the future (copy it to "this evening at 10," say); when the future arrives, the document appears again. You can turn a different knob to make your fast-flowing stream spread out into several slower streams, if you have space enough on your screen to watch them all. And you can gather those separate streams back together whenever you like.

20. Sometimes you will want to listen to your stream instead of watching it (perhaps while you're driving, or sitting through a boring meeting or lecture). Software will read text aloud, and eventually will describe pictures too. When you watch your high-definition TV, you might let the stream trickle down one side of the screen, so you can stay in touch with your life.

21. It's simple for the software that runs your Lifestream to learn about your habits; simple to figure out which emails (for example), or social updates, or news stories, you are likely to find important and interesting. It will therefore be easy for software to highlight the stream elements you're apt to find important, and let the others rush by quickly without drawing your attention.

22. Lifestreams will make it even easier than it is today for software to learn the details of your life and predict your future actions. The potential damage to privacy is too large and important a problem to discuss here. Briefly, the question is whether the crushing blows to privacy from many sources over the last few decades will make us crumple and surrender, or fight harder to protect what remains.

23. The Internet's future is not Web 2.0 or 200.0 but the post-Web, where time instead of space is the organizing principle — instead of many stained-glass windows, instead of information laid out in space, like vegetables at a market — the Net will be many streams of information flowing through time. The Cybersphere as a whole equals every stream in the Internet blended together: the whole world telling its own story. (But the world's own story is full of private information — and so, unfortunately, no human being is allowed to hear it.)

24. Ten years ago I wrote about the growing importance of lifestreams. Last year, the technology journalist Erik Schonfeld asked in a news story whether a certain large company "can take the central communication model of social networks — the lifestream — and pour it back into its IM clients." (The story was headlined "Bebo Zeroes In On Lifestreaming For The Masses.") "Lifestreaming" is a word that is now used generically, and streams are all over the net. Ten years ago I described the computer of the future as a "scooped-out hole in the beach where information from the Cybersphere wells up like seawater." Today the spread of wireless coverage and the growing power of mobile devices means that information does indeed well up almost anywhere you switch on your laptop or cellphone; and "anywhere" will be true before long.

25. From which we learn that (a) making correct predictions about the technology future is easy, and (b) writers should remember to put their predictions in suitably poetic language, so it's easy to say they were right.

25. If we think of time as orthogonal to space, a stream-based, time-based Cybersphere is the traditional Internet flipped on its side in digital space-time. The traditional web-shaped Internet consists (in effect) of many flat panels chaotically connected. Instead of flat sites, where information is arranged in space, we want deep sites that are slices of time. When we look at such a site onscreen, it's natural to imagine the past extending into (or beyond) the screen, and the future extending forward in front of the screen; the future flows towards the screen, into the screen and then deeper into the space beyond the screen.

26. The Internet is no topic like cellphones or videogame platforms or artificial intelligence; it's a topic like education. It's that big. Therefore beware: to become a teacher, master some topic you can teach; don't go to Education School and master nothing. To work on the Internet, master some part of the Internet: engineering, software, computer science, communication theory; economics or business; literature or design. Don't go to Internet School and master nothing. There are brilliant, admirable people at Internet institutes. But if these institutes have the same effect on the Internet that education schools have had on education, they will be a disaster."