...

Author: bowbahdoe

src/SUMMARY.md

@@ -191,6 +191,7 @@
 # Data Types III
 
 - [null](./null.md)
+  - [Null as Absence](./null/null_as_absence.md)
   - [Checking for null](./null/checking_for_null.md)
   - [Field Access](./null/field_access.md)
   - [Instance Methods](./null/instance_methods.md)

src/null.md

@@ -21,20 +21,4 @@ void main() {
 }
 ```
 
-When something has the value of `null` it represents the absence of a "legitimate" value.
-
-A good example is when a puppy is born. It starts without a name and it is later given a name.
-`null` is a way to represent the state of the world in the time before it is named.
-
-```java
-void main() {
-    // Just born, it has no name
-    String puppyName = null;
-    System.out.println("At the start, the name is " + puppyName);
-
-    puppyName = "Sally";
-    System.out.println("Later it was given the name " + puppyName);
-}
-```
-
 [^aswellas]: As well as `long`, `short`, `byte`, and `float` but I haven't shown you those yet.

src/null/null_as_absence.md

@@ -0,0 +1,10 @@
+# Null as Absence
+
+One way to use `null` is to have it be a stand in for when there is
+an "absence" of a value.
+
+Consider [Cher](https://en.wikipedia.org/wiki/Cher). Unlike most people,
+Cher does not have a last name.
+
+```java
+```