diff --git a/beagle.md b/beagle.md
new file mode 100644
index 000000000..cccdfaf22
--- /dev/null
+++ b/beagle.md
@@ -0,0 +1,2 @@
+- a [[ship]].
+	- [[charles darwin]]
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diff --git a/capra course.md b/capra course.md
index eddf33342..47b1980df 100644
--- a/capra course.md	
+++ b/capra course.md	
@@ -32,6 +32,9 @@
 			- the [[dynamics of life's creativity]]
 		- #push [[history of evolutionary thought]]
 			- #push [[charles darwin]]
-				- [[chance variation]] -> [[random mutation]]
-				- [[natural selection]]
+				- based his theory on two core ideas:
+					- [[chance variation]] -> [[random mutation]]
+					- [[natural selection]]
+				- all living organisms are related by common ancestry
+				- [[beagle]]
 	- [[lecture 5]]
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