And you can use `unsafe` in Rust, code up all sorts of memory-unsafe stuff and have it blow up in your face.
In both cases, it should be clear to you that you are behaving in a possibly dangerous manner, that you should know what you're doing and that you are responsible for not endangering others with whatever you're doing.
In a sane language, you can hook up objects in a graph structure with cycles and pass the whole thing (or any portion thereof) wherever you want without having to abandon safety.
