> Not to mention mutexes are just slower in general than having types which are natively Send+Sync Without knowing the implementation, how would you know this

> Not to mention mutexes are just slower in general than having types which are natively Send+Sync Without knowing the implementation, how would you know this statement is true? I could just stick the Arc<Mutex<T>> within my abstraction and say it is send+sync and it would have the exact same performance, and that might be the most efficient solution possible on the given hardware.