Yes … And

… so do search engines.

Dave Winer, on organizing information and finding what you want or need:

Two years ago: “Now of course there are non-hierarchic links, that accounts for serendipity or daydreaming, but when you want to get a job done, hierarchies do the hard work of organizing for quick retrieval.”

And I imagine that the granularity afforded by microcontent and tagging, and new applications like Icerocket and others (Nova Spivack’s work) will make hierarchies as the key means of organizing information less and less dominant … or necessary.