Mike Caulfield argues for a move from streams of response and reaction to gardens of connections, of intentional, designed, thoughtfully constructed spaces. Keynote: The Garden and the Stream blog. 
The garden is architected, and Mike connects it to Bush's sense of creating trails through scholarly literature with the memex. It is a topology, a space we move through.
> The Garden is the web as topology. The web as space. It’s the integrative web, the iterative web, the web as an arrangement and rearrangement of things to one another.
> Things in the Garden don’t collapse to a single set of relations or canonical sequence, and that’s part of what we mean when we say “the web as topology” or the “web as space”. Every walk through the garden creates new paths, new meanings, and when we add things to the garden we add them in a way that allows many future, unpredicted relationships"
The stream is conversation: serial, it moves, we step into it. It is reaction, response, posing and posturing, rather than topology.
> You don’t experience the Stream by walking around it and looking at it, or following it to its end. You jump in and let it flow past. You feel the force of it hit you as things float by.
> It’s not that you are passive in the Stream. You can be active. But your actions in there — your blog posts, @ mentions, forum comments — exist in a context that is collapsed down to a simple timeline of events that together form a narrative.
> The Stream replaces topology with serialization. Rather than imagine a timeless world of connection and multiple paths, the Stream presents us with a single, time ordered path with our experience (and only our experience) at the center.
This old-school hypertext, from Englebart's and Nelson's vision as much as Bush's. It is a call to step back from twitter and blogging posts that create noise and towards the hard work of architecting a web.
The motivation and tool is federation, and with federation a move towards the personal wiki created from federated sources, and placing that wiki at the center of a personal learning environment. Federation changes the hypertextual dynamic that isolated servers create. Federation favors gardening.
The metaphors need unpacking
- Topography - with the user moving through the discursive-rhetorical space.
- Serial - with the discourse presented to the almost passive user.
Mark Bernstein's Hypertext Gardens. Same metaphor and state of mind. Slow down, design. web site
Bernstein's Patterns of Hypertext. Perhaps less applicable to fed wiki but considers pattens of design for gardens web
Mark Bernstein addresses navigation in a short hypertextual essay, "Hypertext Gardens" html , 1998.