diff --git a/_subsections/sec05/lesson-06.org b/_subsections/sec05/lesson-06.org
index d3bfaff..50bf16d 100644
--- a/_subsections/sec05/lesson-06.org
+++ b/_subsections/sec05/lesson-06.org
@@ -7,3 +7,5 @@
 - [[https://www.udemy.com/course/jumpstart-to-2d-game-development-godot-4-for-beginners/learn/lecture/49010963#overview][S05:L06 - video]]
 
 * Notes
+- the more complex the collision shape the more computations
+- if you concentrate on good games, you'll notice the collisions are actually straightforward
diff --git a/toc.org b/toc.org
index 1ef8d7e..8871f1f 100644
--- a/toc.org
+++ b/toc.org
@@ -8,12 +8,6 @@
 - [[../../../course-listings.org][Courses Listing]]
 - [[https://www.udemy.com/course/jumpstart-to-2d-game-development-godot-4-for-beginners/learn/lecture/45145347#overview][Godot2D Course]]
 
-* Contents Overview
-
-** Section 5 - Tappy Plane!
-#+attr_html: :class contents-overview
-- [[./_subsections/sec05/lesson-06.org][Lesson 06 | Plane Movement]]
-
 * obsolete
 ** Section 3 - An intro to Godot with Gem Catcher
 #+attr_html: :class contents-overview
@@ -39,3 +33,10 @@
 - [[./_subsections/sec04/lesson-05.org][Lesson 05, 06 | Collision Shapes and Resources, Falling]]
 - [[./_subsections/sec04/lesson-07.org][Lesson 07 | Flying]]
 - [[./_subsections/sec04/lesson-08.org][Lesson 08 | Collisions: Hitting the Floor]]
+
+* Contents Overview
+
+** Section 5 - Tappy Plane!
+#+attr_html: :class contents-overview
+- [[./_subsections/sec05/lesson-06.org][Lesson 06 | Plane Movement]]
+