diff --git a/03-DESIGN/01-to-be/47-milestones/G-20-lead-answers.md b/03-DESIGN/01-to-be/47-milestones/G-20-lead-answers.md
index 8b6d0c99..d0a98fba 100644
--- a/03-DESIGN/01-to-be/47-milestones/G-20-lead-answers.md
+++ b/03-DESIGN/01-to-be/47-milestones/G-20-lead-answers.md
@@ -257,3 +257,8 @@ names the principle that settles it, and is cited as "design 47 G A-n".
 - **A-65** (§387, §529; principle 1, a module's data lives on the bus) mesh-knowledge's findings go through the writer
   like every observer's: it gains the `finding-events` stream and a writer over the `findings` state it already
   requires, and its findings no longer live in its database.
+- **A-66** (§704; principles 7 and 3) The seed's `steps` call names the artifact by the contract's key
+  `<module>.<artifact>`, `module` beside it; its `fetch` is composed from the entry (repository, commit, path, the
+  artifact's paths, and `packages` and `beside` where the entry carries them); the time since a seat first failed to
+  answer is kept in the indexer's own state, so a restart keeps it, and the finding is written at the next seed attempt
+  past five minutes.