diff --git a/experiments/2024-12-09/src/geometry/operation.rs b/experiments/2024-12-09/src/geometry/operation.rs
index a68249b48..1ce8a194b 100644
--- a/experiments/2024-12-09/src/geometry/operation.rs
+++ b/experiments/2024-12-09/src/geometry/operation.rs
@@ -29,7 +29,7 @@ impl fmt::Display for OperationDisplay<'_> {
     }
 }
 
-#[derive(Debug, Eq, Ord, PartialEq, PartialOrd)]
+#[derive(Eq, Ord, PartialEq, PartialOrd)]
 pub struct Handle<T> {
     inner: Rc<T>,
 }
@@ -72,6 +72,14 @@ impl<T> Deref for Handle<T> {
     }
 }
 
+impl<T> fmt::Debug for Handle<T> {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        f.debug_struct("Handle")
+            .field("inner", &Rc::as_ptr(&self.inner))
+            .finish()
+    }
+}
+
 #[derive(Clone)]
 pub struct AnyOp {
     inner: Rc<dyn Operation>,