diff --git a/README.md b/README.md
index e329d67..fa752f9 100644
--- a/README.md
+++ b/README.md
@@ -260,7 +260,7 @@ The `event handler`, `h`, associated with
`:delete-item`, is called to compute the `effect` of this event.
This handler function, `h`, takes two arguments: a `coeffects` map
-which holds the current state of the world (including app state),
+which holds the current state of the world (including app state),
and the `event`. It must return a map of `effects` - a description
of how the world should change. Here's a sketch (we are at 30,000 feet):
```clj
diff --git a/docs/MentalModelOmnibus.md b/docs/MentalModelOmnibus.md
index 2a0a591..03add17 100644
--- a/docs/MentalModelOmnibus.md
+++ b/docs/MentalModelOmnibus.md
@@ -11,17 +11,19 @@ then those patterns will repeat themselves.
-The tutorials initially focus on the **domino
+The re-frame tutorials initially focus on the **domino
narrative**. The goal is to efficiently explain the mechanics of re-frame,
and get you reading and writing code ASAP.
-**But** there are other perspectives on re-frame
+But **there are other perspectives** on re-frame
which will deepen your understanding.
This tutorial is a tour of these ideas, justifications and insights.
It is a little rambling, but I'm hoping it will deliver for you
at least one "Aaaah, I see" moment before the end.
+> All models are wrong, but some are useful
+
## Table Of Contents
diff --git a/images/Readme/6dominoes.png b/images/Readme/6dominoes.png
index 320eb84..bc0aa2f 100644
Binary files a/images/Readme/6dominoes.png and b/images/Readme/6dominoes.png differ
diff --git a/images/mental-model-omnibus.jpg b/images/mental-model-omnibus.jpg
index abd45b8..47cc51a 100644
Binary files a/images/mental-model-omnibus.jpg and b/images/mental-model-omnibus.jpg differ