diff --git a/2024-09-21.md b/2024-09-21.md
index c1b6302e7..fc8435501 100644
--- a/2024-09-21.md
+++ b/2024-09-21.md
@@ -12,4 +12,5 @@
 - Today I noticed that [[37]] = [[19]] + [[18]], meaning a centered hex number plus its center-less partner.
   - So it seems like a very good packing for two hex numbers, in one figure.
 - Then I [[flowed]].
--
+  - [[social.coop]]
+  - [[Ekumen]]