diff --git a/practice.md b/practice.md
index 703ce39e7..b6eb3c0b5 100644
--- a/practice.md
+++ b/practice.md
@@ -1,2 +1,2 @@
 - whatever you practice, you get better at. 
-	- you often get even better if you are into system modeling.
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+	- if you are into [[systems]] you can unlock higher gains.
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diff --git a/systems.md b/systems.md
new file mode 100644
index 000000000..cf63049c0
--- /dev/null
+++ b/systems.md
@@ -0,0 +1,2 @@
+- [[pull]] [[stpa]]
+- [[pull]] [[processes]] i na 
\ No newline at end of file