And also in Rust you end up with less increment/decrement on the count, because you can safely borrow the interior without messing with the reference count. You

And also in Rust you end up with less increment/decrement on the count, because you can safely borrow the interior without messing with the reference count. You really only need to mess with the count when an owner goes into or out of scope, not every reference. and you can use non-atomic counts if you’re not multithreaded, which is also cheaper.