How do I practice extended mind thesis?

The most direct way to practice extended mind thesis is through a focused exercise: Audit your cognitive extensions. List every external tool you rely on to think, decide, or remember: calendar, task manager, notes app, bookmarks, spreadsheets, AI assistants. For each one, answer: if this tool disappeared tomorrow, what cognitive capacity would I lose? If the answer is significant — you can't remember appointments, you can't reconstruct your project priorities, you can't recall what you've read — then that tool is not an accessory. It is part of your mind. Treat it accordingly: maintain it, trust it, invest in it.

Common pitfall: Treating your external systems as secondary to your 'real' thinking. This shows up as casual maintenance — sporadic notes, unreviewed captures, tools you set up but never return to. If your notebook is genuinely part of your cognitive system, neglecting it is the equivalent of neglecting your memory. The other failure is over-reliance without understanding: offloading everything to tools without maintaining the skill to think independently. Extended mind requires partnership, not delegation.

This practice connects to Phase 10 (Externalization Mastery) — building it as a repeatable habit compounds over time.