diff --git a/cs171/Lect02/readme.txt b/cs171/Lect02/readme.txt
new file mode 100644
index 0000000000000000000000000000000000000000..979664b534c207c6a31197b777fa575276377c5f
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+++ b/cs171/Lect02/readme.txt
@@ -0,0 +1,3 @@
+Lecture 2 was pre-recorded, so there are no live demos.
+
+Sample code from the recordings is available in Blackboard.
diff --git a/cs172/Lect02/readme.txt b/cs172/Lect02/readme.txt
new file mode 100644
index 0000000000000000000000000000000000000000..979664b534c207c6a31197b777fa575276377c5f
--- /dev/null
+++ b/cs172/Lect02/readme.txt
@@ -0,0 +1,3 @@
+Lecture 2 was pre-recorded, so there are no live demos.
+
+Sample code from the recordings is available in Blackboard.