diff --git a/300s School/ME 2150 - High Assurance Cyber-Physical Systems/2025-01-14 Microkernels.md b/300s School/ME 2150 - High Assurance Cyber-Physical Systems/2025-01-14 Microkernels.md
index 2f0eb97a1..934e8f5cc 100644
--- a/300s School/ME 2150 - High Assurance Cyber-Physical Systems/2025-01-14 Microkernels.md	
+++ b/300s School/ME 2150 - High Assurance Cyber-Physical Systems/2025-01-14 Microkernels.md	
@@ -7,4 +7,5 @@ Key advantages:
 2. Fault isolation
 3. Reliability - smaller codebase
 4. Security and Maintainability
-
+The big con:
+Microkernels have way, way more interprocess communication (IPC). There are more delays because of all the extra communication.