This week's #Rust lesson was to wrap mutable bits of state in `Arc<Mutex<>>` otherwise you may encounter issues with data not persisting even though you think you've got mutable references to it.
@mauve I feel like something in your explainer doesn’t quite sound right?
I don't know what you’re doing exactly, but the way I'd phrase it is: Rust’s borrowing rules require that each reference must be either mutable XOR shared. `Arc<Mutex<T>>` allows you to break that limitation and have a reference which is mutable AND shared.
idk, does that match the way you were thinking about it?
