diff --git a/tools for thinking.md b/tools for thinking.md
index 09a9089cd..fae6cae12 100644
--- a/tools for thinking.md	
+++ b/tools for thinking.md	
@@ -72,8 +72,12 @@
   - belief that there will be a lot of change in this space
   - when they started, [[evernote]] was the most popular request -- that's changed a lot since then
   - on a macro level
+    - (missed one beat here I think)
     - paradigm shift with [[notion]] (2017-2020), block based architecture
-    - other innovation: [[multiplayer]]
+      - other innovation: [[multiplayer]]
+    - then [[roam]] (blew up in 2021), first somewhat mainstream [[graph database]]
+      - [[backlinks]] and [[transclusion]]
+      - [[daily notes]] page
 
 ## [[Demo: Protocol Design for Tools for Thinking]]