diff --git a/readme.md b/readme.md
index 7305dba..c3c5adb 100644
--- a/readme.md
+++ b/readme.md
@@ -86,7 +86,7 @@ Keep in mind that [functions are objects too](https://developer.mozilla.org/en-U
 
 ##### .numericString(value)
 
-Returns `true` for a string that represents a number satisfying `is.number`.
+Returns `true` for a string that represents a number satisfying `is.number`, for example, `'42'` and `'-8.3'`.
 
 Note: `'NaN'` returns `false`, but `'Infinity'` and `'-Infinity'` return `true`.