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@@ -34,4 +34,8 @@ Definition of [[system]]:
 
 [[hazards]] + [[environmental conditions]] = [[losses]]
 
-![[Pasted image 20210718231941.png]]
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+![[Pasted image 20210718231941.png]]
+
+The heart of STPA: 
+
+![[Pasted image 20210718234343.png]]
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