diff --git a/readme.md b/readme.md
index 28521b9..7305dba 100644
--- a/readme.md
+++ b/readme.md
@@ -69,7 +69,7 @@ All the below methods accept a value and returns a boolean for whether the value
 ##### .string(value)
 ##### .number(value)
 
-Note: `is.number(NaN)` returns `false`.
+Note: `is.number(NaN)` returns `false`. This intentionally deviates from `typeof` behavior to increase user-friendliness of `is` type checks.
 
 ##### .boolean(value)
 ##### .symbol(value)
@@ -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. For example, `'42'` and `'-8'`.
+Returns `true` for a string that represents a number satisfying `is.number`.
 
 Note: `'NaN'` returns `false`, but `'Infinity'` and `'-Infinity'` return `true`.