Building a better thinking environment

A cluttered notes system can quietly sabotage deeper thinking, and Justin Horton’s Obsidian setup is built to prevent that by separating “note taking” from “note making.” The core move is structural: he treats time-stamped capture and external reference as a productivity runway, while reserving a cleaner, less burdened space for idea play, synthesis, and concept development. The result is an “integrated thinking environment” designed to reduce day-to-day noise so higher-level work has room to happen.

Horton frames the problem in personal terms—years of taking notes that eventually became “absolutely cluttered” and harder to process than to use. He connects that experience to a broader productivity principle popularized by David Allen’s Getting Things Done: clearing the runway at lower levels so attention can rise to higher levels. In Horton’s case, the clutter isn’t just volume; it’s mixing functions. When capture, organization, and ideation live in the same place, the system pulls him into busy work and keeps him from thinking.

To address that, he borrows the “exocortex” idea—an externalized extension of the mind—then translates it into an Obsidian vault he calls “exocortex.” The sci-fi inspiration (Tony Stark’s workshop) is more flavor than function; the practical influence comes from Charles Strauss’s Accelerando and the broader “extended mind” conversation. The key takeaway is operational: build a dedicated note-taking system that reliably stores inputs, and a separate note-making space where ideas can be explored without the pressure of getting things “right.”

His vault is organized around eight main components, anchored by an “Idea Lab” at the center. That area stays intentionally tidy and concept-focused, supported by a “MOC” (map of content) layer used to collect and connect materials for processing. For note taking, he uses a “Log Book” for time-stamped entries, organized by year to avoid an unmanageable sprawl. He also splits incoming reference into “External Sources” (notes on books, videos, and similar materials) and a “Resource Library” for support files such as images and Obsidian-related assets.

Utility functions sit alongside but do not dominate the thinking spaces. “Workspaces” acts as a hybrid holding area for day-job projects where rough material can be dumped and cleaned later. A “Toolbox + Inbox” combination supports quick capture (the inbox) and navigation as the library grows, including dashboards and early experiments with Dataview to surface recently changed or created notes. Finally, a “Home note” serves as the common access point tying everything together.

Horton’s daily workflow reinforces the separation. He uses a home/daily hybrid note that links out to task and planning tools (OmniFocus, Fantastical, and time tracking) so he can check commitments quickly, then take notes during the day. Meeting notes and other working documents become part of a PKM-style productivity loop—useful for connecting ideas—while the system’s design goal remains consistent: keep the environment out of the way so deeper thinking can actually happen. The setup is presented as a starting point, not a finished product, meant to evolve as his needs change.