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 979245a6..e5aa88c6 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
@@ -103,3 +103,6 @@ names the principle that settles it, and is cited as "design 47 G A-n".
 - **A-26** (§687, §689, A-22; principle 7) A part raises no follower's finding itself: every follower is adopted through
   its reader (`Adopt`), and the reader raises and clears the follower's four findings through the module's writer, so
   the pipeline runner, the indexer and the assigner build none of their own.
+- **A-27** (A-26, A-16; principle 7) The tool runner's first views follow A-26 too: `firstview` builds a
+  `views.ProcessReader` over the runner's bus connection and adopts its followers, so the reader raises their findings;
+  the runner's `bus.Conn` gains one accessor for its JetStream, its one place (A-16).