diff --git a/git/determine-the-hash-id-for-a-blob.md b/git/determine-the-hash-id-for-a-blob.md
index 8c469ff..2e9f64c 100644
--- a/git/determine-the-hash-id-for-a-blob.md
+++ b/git/determine-the-hash-id-for-a-blob.md
@@ -15,4 +15,7 @@ the contents. This is the magic of git. Anytime git needs to store a blob,
 it can quickly match against the hash id in order to avoid storing duplicate
 blobs.
 
+Try it on your own machine, you don't even need to initialize a git
+repository to use `git hash-object`.
+
 [source](http://ftp.newartisans.com/pub/git.from.bottom.up.pdf)