diff --git a/capra course.md b/capra course.md
index 7d24a22d8..a7d50a410 100644
--- a/capra course.md	
+++ b/capra course.md	
@@ -71,5 +71,6 @@
 							- [[acquiring genomes]]
 								- compares organisms to [[corporations]]
 						-
-					-
+				- all three of the previous produce changes that need to be integrated into the physical and chemical environment; if the integration of new genetic information doesn't work, the organism can't survive (and that produces ev)
+				- [[epigenetic network]]
 	- [[lecture 5]]
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