diff --git a/experiments/2025-03-18/src/app.rs b/experiments/2025-03-18/src/app.rs
index 8adf2da46..e5eefea6d 100644
--- a/experiments/2025-03-18/src/app.rs
+++ b/experiments/2025-03-18/src/app.rs
@@ -52,7 +52,7 @@ impl ApplicationHandler for App {
         _: WindowId,
         event: WindowEvent,
     ) {
-        let (Some(window), Some(renderer)) =
+        let (Some(_), Some(renderer)) =
             (self.window.as_ref(), self.renderer.as_mut())
         else {
             return;
@@ -72,28 +72,6 @@ impl ApplicationHandler for App {
             } => {
                 event_loop.exit();
             }
-            WindowEvent::KeyboardInput {
-                event: KeyEvent { logical_key, .. },
-                ..
-            } => {
-                match logical_key {
-                    Key::Named(NamedKey::ArrowRight) => {
-                        self.view.selected_mut().select_last();
-                    }
-                    Key::Named(NamedKey::ArrowLeft) => {
-                        self.view.parent_of_selected_mut().select_none();
-                    }
-                    Key::Named(NamedKey::ArrowDown) => {
-                        self.view.parent_of_selected_mut().select_next();
-                    }
-                    Key::Named(NamedKey::ArrowUp) => {
-                        self.view.parent_of_selected_mut().select_previous();
-                    }
-                    _ => {}
-                }
-
-                window.request_redraw();
-            }
             WindowEvent::RedrawRequested => {
                 if let Err(err) = renderer.render(&self.view) {
                     eprintln!("Render error: {err}");
diff --git a/experiments/2025-03-18/src/view.rs b/experiments/2025-03-18/src/view.rs
index 5ba4711c0..8424d9c03 100644
--- a/experiments/2025-03-18/src/view.rs
+++ b/experiments/2025-03-18/src/view.rs
@@ -22,78 +22,12 @@ impl OperationView {
         }
     }
 
-    pub fn select_last(&mut self) {
-        self.selected = Some(self.last_index());
-    }
-
-    pub fn select_next(&mut self) {
-        if let Some(selected) = self.selected {
-            self.selected = Some(usize::min(selected + 1, self.last_index()));
-        }
-    }
-
-    pub fn select_previous(&mut self) {
-        if let Some(selected) = self.selected {
-            self.selected = Some(selected.saturating_sub(1));
-        }
-    }
-
-    pub fn select_none(&mut self) {
-        self.selected = None;
-    }
-
     pub fn selected(&self) -> &Self {
         self.selected
             .and_then(|selected| self.children.get(selected))
             .map(|child| child.selected())
             .unwrap_or(self)
     }
-
-    pub fn selected_mut(&mut self) -> &mut Self {
-        let Some(selected) = self.selected else {
-            return self;
-        };
-
-        // The way this is done, first checking for `is_none` and then
-        // `unwrap`ing below, is really ugly. But the borrow checker is forcing
-        // my hand.
-        //
-        // I've tried several variations of matching, and it can't see that in
-        // the `None` case, `self` no longer needs to be borrowed, preventing me
-        // from returning it.
-
-        if self.children.get_mut(selected).is_none() {
-            return self;
-        };
-
-        self.children.get_mut(selected).unwrap().selected_mut()
-    }
-
-    pub fn parent_of_selected_mut(&mut self) -> &mut Self {
-        let Some(selected) = self.selected else {
-            return self;
-        };
-
-        // The same comment in `selected_mut` applies here too. Plus, some ugly
-        // duplication.
-
-        if self.children.get_mut(selected).is_none() {
-            return self;
-        };
-
-        if self.children.get_mut(selected).unwrap().selected.is_none() {
-            self
-        } else {
-            self.children
-                .get_mut(selected)
-                .unwrap()
-                .parent_of_selected_mut()
-        }
-    }
-
-    fn last_index(&self) -> usize {
-        self.children.len().saturating_sub(1)
-    }
 }
 
 impl Object for OperationView {