vault backup: 2021-07-19 01:06:54

stpa handbook.md

@@ -58,4 +58,8 @@ On [[control]] proper:
 
 tips to prevent common mistakes in a control structure: 
 
-![[Pasted image 20210719010243.png]]
+![[Pasted image 20210719010243.png]]
+
+Step three:
+
+![[Pasted image 20210719010634.png]]

system theoretic process analysis.md

@@ -28,5 +28,6 @@
 		- [[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?)
 	- step three: [[identify unsafe control actions]]
-		- an [[unsafe control action]] is 
+		- an [[unsafe control action]] is one that, in a particular context, will lead to a [[hazard]].
+