diff --git a/.hash b/.hash
index aa3a406..c140047 100644
--- a/.hash
+++ b/.hash
@@ -1,6 +1,6 @@
 ainotes.cls,2a364c6
 year1/cognition-and-neuroscience/module1,7f9131a
-year1/cognition-and-neuroscience/module2,f28880f
+year1/cognition-and-neuroscience/module2,0b42962
 year1/combinatorial-decision-making-and-optimization/module1,ea45a50
 year1/combinatorial-decision-making-and-optimization/module2,593ea4c
 year1/deep-learning,640ccf4
diff --git a/year1/cognition-and-neuroscience/module2/cn2.pdf b/year1/cognition-and-neuroscience/module2/cn2.pdf
index 0cce318..028ab6a 100644
Binary files a/year1/cognition-and-neuroscience/module2/cn2.pdf and b/year1/cognition-and-neuroscience/module2/cn2.pdf differ