diff --git a/src/clj/com/rpl/specter/impl.cljc b/src/clj/com/rpl/specter/impl.cljc
index 61e5b69..42d3bc4 100644
--- a/src/clj/com/rpl/specter/impl.cljc
+++ b/src/clj/com/rpl/specter/impl.cljc
@@ -603,6 +603,9 @@
 (defn dynamic-var? [v]
   (-> v meta :dynamic))
 
+;; original-obj stuff is done to avoid using functions with metadata on them
+;; clojure's implementation of function metadata causes the function to do an
+;; apply for every invocation
 (defn direct-nav-obj [o]
   (vary-meta o merge {:direct-nav true :original-obj o}))