diff --git a/distant/brain/brain.go b/distant/brain/brain.go
index ed47b66..08bf524 100644
--- a/distant/brain/brain.go
+++ b/distant/brain/brain.go
@@ -4,4 +4,4 @@ type Interface interface {
 	Think(prefix []string) (string, error)
 }
 
-func Think(s Interface, prompt string) (string, error) { panic("TODO") }
+func Think(br Interface, prompt string) (string, error) { panic("TODO") }
diff --git a/distant/brain/types.go b/distant/brain/types.go
deleted file mode 100644
index 3f4b66a..0000000
--- a/distant/brain/types.go
+++ /dev/null
@@ -1,6 +0,0 @@
-package brain
-
-type (
-	Message struct{}
-	Tuple   struct{}
-)