diff --git a/300s School/NUCE 2100 - Fundamentals of Nuclear Engineering/2024-09-17 Module 5 Nuclear Fission Basics.md b/300s School/NUCE 2100 - Fundamentals of Nuclear Engineering/2024-09-17 Module 5 Nuclear Fission Basics.md
index 18629ea3..bf9e1989 100644
--- a/300s School/NUCE 2100 - Fundamentals of Nuclear Engineering/2024-09-17 Module 5 Nuclear Fission Basics.md	
+++ b/300s School/NUCE 2100 - Fundamentals of Nuclear Engineering/2024-09-17 Module 5 Nuclear Fission Basics.md	
@@ -47,3 +47,8 @@ Zirconium is used as the cladding. Low neutron absorbtion cross section.
 Not all of the rods in the lattice are fuel. Sometimes they are, but also, sometimes they're control rods or instrumentation rods. 
 BWRs have smaller assemblies. Have water rods. Can be 'canned'
 # Module 5.4 - Criticality Control
+No reactor can be constantly critical. Things are dynamic no matter what.
+Criticality Impacters:
+- Fuel depletion
+- Moderator tempeature
+- 
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