diff --git a/presentation.md b/presentation.md
index 3341e59..0405baf 100644
--- a/presentation.md
+++ b/presentation.md
@@ -159,4 +159,18 @@ $ readlink /home/tylerm/.guix-home/profile/bin/gcc
 - Package manager takes in user and system configuration
 - Downloads needed data into store
 - Build any needed packages
-- Symlinks the user and system profiles
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+- Symlinks the user and system profiles
+
+---
+
+## Temporary Packages
+
+- Nix and Guix allow installing packages temporarily
+- Uses contained environment
+- `guix shell <package>`
+- `nix shell -p <package>`
+
+---
+
+### lori
+ipsum
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