diff --git a/docs/architecture/README.md b/docs/architecture/README.md
index b84c2ecdc1..0820846498 100644
--- a/docs/architecture/README.md
+++ b/docs/architecture/README.md
@@ -1132,6 +1132,15 @@ Never build a rung before standing on the previous one.
     direction is attributed alongside the machine's contribution.
     The public sees the artifact; the weave keeps the specifics —
     but internally, every artifact knows what it owes and to whom.
+42a. Sources are first-class entities. Every collected fact carries an
+    edge to where it came from — no orphan facts, ever. Unsourced
+    claims enter at low groundedness and stay there until grounded.
+    Each source accumulates its own track record: caught right, trust
+    rises; caught wrong, it sinks. Two readings per source: what the
+    public trusts, and what OUR OWN observations have earned it — and
+    ours outranks theirs, because public trust is just someone else's
+    unexamined fold. This is the fix for what broke everything: facts
+    that lost their receipts and got believed anyway.
 43. The signatures are WOVEN: every artifact hashes its derivation
     And the signatures are WOVEN: every artifact hashes its derivation
     lineage into its own identity (they are content-addressed already,