diff --git a/Pasted image 20210719010243.png b/Pasted image 20210719010243.png
new file mode 100644
index 000000000..0718fc4e2
Binary files /dev/null and b/Pasted image 20210719010243.png differ
diff --git a/system theoretic process analysis.md b/system theoretic process analysis.md
index de777da88..7ad55d7f6 100644
--- a/system theoretic process analysis.md	
+++ b/system theoretic process analysis.md	
@@ -24,4 +24,5 @@
 		- control goes down, feedback goes up
 			- vertical axis represents a hierarchy ([[heterarchy]]? perhaps in voting systems)
 		- [[responsibilities]] can be assigned to each control structure entity; they are refinements of [[system level constraints]]
-		- [[feedback]] can be derived from [[responsibilities]] (which information does the process model need to contain?)
\ No newline at end of file
+		- [[feedback]] can be derived from [[responsibilities]] (which information does the process model need to contain?)
+		- tips to prevent common mistakes in a control struc![[Pasted image 20210719010243.png]]
\ No newline at end of file