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TANGENT · DWG. NO. SB-001GENERAL ARRANGEMENT — SECOND BRAINREV B — SUPERSEDES: PAPER

FIG. 01 — GENERAL ARRANGEMENT

Build a brain
you can point to.

Tangent is a note-taking application assembled from three components: capture, links, recall. No moving parts you don’t control. Erected in minutes. Holds for decades.

Approved for construction →View full spec
CAPACITY — UNLIMITEDFRAGMENTS, UNSORTEDNOTE 21/3aNOTE 21/3bNOTE 8/4RECALLVALVE — OPENREV B123℄ TRAIN OF THOUGHT
① CAPTURE INLET
Global hotkey, operable over any app. ≤ 2 s from thought to filed. No titles or folders at intake.
② NOTE CELLS
Plain text, local-first. Each cell carries an address and remains owner-readable forever.
③ BIDIRECTIONAL TIES
Load-bearing. Links run both ways and carry recall in either direction. No orphan notes permitted.

FIG. 02 — CAPTURE, DETAIL

⌘KBLANK LINE
  • TIME TO FILE ……… ≤ 2 SEC
  • TITLES REQUIRED …… 0
  • OPERABLE OVER …… EVERY APP

FIG. 03 — RECALL, SECTION

“that thing about…”MATCHES,RANKED
  • QUERY TYPE ……… HALF-REMEMBERED
  • RANKED BY ……… PROXIMITY OF THOUGHT
  • DEAD ENDS ……… NONE; EVERY NOTE LINKS ON

TABLE 01 — MATERIALS SCHEDULE

MARKITEMSPECIFICATIONRATE
A1VAULTPLAIN-TEXT NOTES, STORED ON OWNER’S DISK$0
B2SYNCEND-TO-END ENCRYPTED, ALL DEVICES$4/MO
C3NOTHING ELSENO ADS. NO TRAINING ON YOUR NOTES.INCL.

GENERAL NOTES

  1. ALL THOUGHTS TO BE FILED WITHIN 2 SECONDS OF ARRIVAL.
  2. LINKS SHALL BE BIDIRECTIONAL THROUGHOUT.
  3. NO CLOUD SHALL BE LOAD-BEARING. VAULT REMAINS ON OWNER’S MACHINE.
  4. FORGETTING BY OWNER: PERMITTED. FORGETTING BY SYSTEM: PROHIBITED.
  5. THIS DRAWING TO BE READ TOGETHER WITH THE OWNER’S CURIOSITY.
TANGENTdrafting dept.
PROJECT
A SECOND BRAIN
CLIENT
YOU
SCALE
1 : ∞
DATE
JUN 2026
SHEET
1 OF 1
REV
B
Begin construction — free