diff --git a/free.md b/free.md
index 6f6e3cf82..a936decb8 100644
--- a/free.md
+++ b/free.md
@@ -3,13 +3,8 @@
 - A [[concept]].
   - [[available]] to [[all]]
   - [[unencumbered]]
-- [[pull]] [[open source]]
-- [[pull]] [[open ethics]]
-- [[pull]] [[solved]]
+- [[pull]] [[open source]] [[open ethics]] [[public utility]]
+ 
+https://twitter.com/flancian/status/1387531947556196354
 
 
-[//begin]: # "Autogenerated link references for markdown compatibility"
-[pull]: pull "Pull"
-[open source]: open-source "Open Source"
-[open ethics]: open-ethics "Open Ethics"
-[//end]: # "Autogenerated link references"
\ No newline at end of file