diff --git a/how can we develop transformative tools for thought.md b/how can we develop transformative tools for thought.md
index dc492023d..01c662647 100644
--- a/how can we develop transformative tools for thought.md	
+++ b/how can we develop transformative tools for thought.md	
@@ -8,8 +8,13 @@
     - [[vannevar bush]]
     - [[seymour papert]]
     - [[ivan sutherland]]
-  - [[kenneth iverson]] introduced the term [[tools for thought]] in [[notation as a tool of thought]] regarding [[APL]]
-    - … except he didn't maybe? :) he uses [[tool of thought]] instead, consistently. 
-    - The syntagm "for thought" doesn't appear even once in the paper.
-    - "of thought" seems to give thought *agency* in a way that is interesting? instead of sounding like the product of the tool.
-  - They prefer [[medium for thought]] sometimes though, like to keep their options open. Makes sense.
+  - on the term [[tools for thought]]
+    - [[kenneth iverson]] introduced the term [[tools for thought]] in [[notation as a tool of thought]] regarding [[APL]]
+      - but (this is me):
+        - … except he didn't maybe? :) he uses [[tool of thought]] instead, consistently. 
+        - The syntagm "for thought" doesn't appear even once in the paper.
+        - "of thought" seems to give thought *agency* in a way that is interesting? instead of sounding like the product of the tool.
+      - They prefer [[medium for thought]] sometimes though, like to keep their options open. Makes sense.
+  - [[memory systems]]
+    - [[mnemonic medium]]
+    - example: [[quantum country]]