>instead of having clear memory ownership contracts You have a good point for shared_ptr, but unique_ptr offers the best clarity for ownership, much better tha

>instead of having clear memory ownership contracts You have a good point for shared_ptr, but unique_ptr offers the best clarity for ownership, much better than raw pointers, since owning and non-owning pointers all look the same, but a unique_ptr that hands out regular pointers to its memory makes it clear in the code who owns what.