diff --git a/arena/arenas.go b/arena/arenas.go
index 906fd48..c86b183 100644
--- a/arena/arenas.go
+++ b/arena/arenas.go
@@ -83,6 +83,8 @@ func Chunked(chunk_size uintptr) Arena {
 		panic("chunked: chunk_size must be greater than zero")
 	}
 
+	// @todo(judah): this can be drastically improved.
+
 	type chunk struct {
 		data   []byte
 		offset uintptr