diff --git a/study/COLLECTIONS.MD b/study/COLLECTIONS.MD
index c5048cd..5b5e288 100644
--- a/study/COLLECTIONS.MD
+++ b/study/COLLECTIONS.MD
@@ -45,4 +45,8 @@ All datastructures referenced here can be imported using `import java.util.<stru
 | **default Stream<E> stream()**                            | It returns a sequential Stream with the collection as its source.                                               |
 | **default Spliterator<E> spliterator()**                  | It generates a Spliterator over the specified elements in the collection.                                       |
 | **public boolean equals(Object element)**                 | It matches two collections.                                                                                     |
-| **public int hashCode()**                                 | It returns the hash code number of the collection.                                                              |
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+| **public int hashCode()**                                 | It returns the hash code number of the collection.                                                              |
+
+Since all classes discussed onward inherit the `Collections` interface, you can be sure that a valid, working implementation exists for every single one of these methods.
+
+However, the real power comes from the next set of interfaces, and the special methods devised by each class to manipulate these complex data structures.
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