diff -r 829c07ea584d -r 03f34ba55685 src/convex.rs
--- a/src/convex.rs	Mon Sep 01 23:08:01 2025 -0500
+++ b/src/convex.rs	Mon Sep 01 23:08:27 2025 -0500
@@ -415,7 +415,7 @@
     type Derivative = X::Owned;
 
     fn differential_impl<I: Instance<X>>(&self, x: I) -> Self::Derivative {
-        x.own().into_owned()
+        x.into_owned()
     }
 }