diff --git a/journal/2021-08-15.md b/journal/2021-08-15.md
index 9b2bc5d4e..6e43df295 100644
--- a/journal/2021-08-15.md
+++ b/journal/2021-08-15.md
@@ -9,4 +9,6 @@
 - [[david deutsch]]
   - [[the fabric of reality]]
 - [[max tegmark]]
-  - [[our mathematical universe]]
\ No newline at end of file
+  - [[our mathematical universe]]
+- [[will walker]]
+  - [[retroactive public goods funding]]
\ No newline at end of file
diff --git a/retroactive public goods funding.md b/retroactive public goods funding.md
new file mode 100644
index 000000000..1a8f9f56d
--- /dev/null
+++ b/retroactive public goods funding.md	
@@ -0,0 +1,4 @@
+# retroactive public goods funding
+
+- [[go]] https://medium.com/ethereum-optimism/retroactive-public-goods-funding-33c9b7d00f0c
+