diff --git a/src/clj/com/rpl/specter/protocols.clj b/src/clj/com/rpl/specter/protocols.clj
index 6655020..195c335 100644
--- a/src/clj/com/rpl/specter/protocols.clj
+++ b/src/clj/com/rpl/specter/protocols.clj
@@ -1,6 +1,10 @@
 (ns com.rpl.specter.protocols)
 
 
+;;TODO: might be able to speed it up more by having these return a function rather than 
+;;rely on protocol methods (can then compose functions together directly)
+;;so protocol would just be used during composition - what about execution?
+;;could have a select-fast function that takes in a selector FUNCTION explicitly
 (defprotocol StructureValsPath
   (select-full* [this vals structure next-fn])
   (update-full* [this vals structure next-fn]))
@@ -16,4 +20,4 @@
 ;;StructurePath in sequence become a single StructurePath
 ;;any StructureValsPath composed with anything becomes a StructureValsPath
 ;;TODO: update update/select to be able to execute a StructurePath directly without coercing it
-;;   - this will avoid MANY layers of indirection and overhead
\ No newline at end of file
+;;   - this will avoid MANY layers of indirection and overhead