diff --git a/.hash b/.hash
index 7d4bd16..173f633 100644
--- a/.hash
+++ b/.hash
@@ -1,5 +1,5 @@
 ainotes.cls,d9b2afb
-cognition-and-neuroscience,f619bee
+cognition-and-neuroscience,13a55fa
 combinatorial-decision-making-and-optimization/module1,1ebcad4
 combinatorial-decision-making-and-optimization/module2,1290f34
 deep-learning,2582b90
diff --git a/cognition-and-neuroscience/cn.pdf b/cognition-and-neuroscience/cn.pdf
index 6fefd6e..c27ebe4 100644
Binary files a/cognition-and-neuroscience/cn.pdf and b/cognition-and-neuroscience/cn.pdf differ