Speed of change with digital paradigms

Ethan Zuckerman has a fascinating post up about a project that is doing “digital archeology.” Among other nuggets of wisdom, his discussion of moving from the metaphor of “pages” to “streams”:

The more important shift in metaphor was from pages to streams. In the mid-1990s, we understood the web in terms of pages. Some pages were meant to be permanent, others changing, others completely ephemeral. Blogs updated the paradigm somewhat – they were pages we expected would change, daily, perhaps weekly. But they were pages, with permanency and permalinks. And you controlled what went on them, even if you permitted comments on your blog. Conversations took place between spaces – I link to you, you link to me. In the age of Twitter and Facebook, pages feel too permanent, too fixed. You produce a stream of updates which flow past your friends. If they follow you closely, they might hang on your every update – more likely, they dip their feet into the stream now and again, seeing what you’re up to, chiming in with a comment or an upvote.

It would be a mistake to visualize these interactions as buildings composing a city. They’re rivers, distinguishable by path and magnitude, but shifting and ever-changing. You can never step into the same lifestream twice.</blockquote>