diff --git a/notes/deep_merge_exploration.org b/notes/deep_merge_exploration.org
index 77ec0e16..e0a11147 100644
--- a/notes/deep_merge_exploration.org
+++ b/notes/deep_merge_exploration.org
@@ -21,7 +21,10 @@ Construction types could be map (associative array) or arrays.
 Sounds simple enough.
 
 So a common task is to "merge" such structure.
-In Haskell this kind of operation would be repugnant for most programmer.
-But, even in Haskell this could be useful.
+A typical common example, is to have an application that read from a
+configuration file.
 
-So
+As the application becomes more and more complex, the configuration file
+also grow in complexity.
+At first, this is just a list of properties, but it is frequent to use
+json, yaml (dhall if you are in this kind of thing).