diff --git a/xin0.md b/xin0.md
index f7fac03db..3b567b712 100644
--- a/xin0.md
+++ b/xin0.md
@@ -27,4 +27,6 @@
   - [[agora protocol]], old doc, has some on this
 - [[philosophical questions]]
 - [[game]] [[humankind]]
+- something we could disagree on
+  - the role of [[money]]?