C++ is unsafe by default. You have to opt-in to obtain all of the safety (by adhering to a particular pattern of use, or using a particular kind of class, etc.)

C++ is unsafe by default. You have to opt-in to obtain all of the safety (by adhering to a particular pattern of use, or using a particular kind of class, etc.). Rust is safe by default. You have to opt-out to head into dangerous territory. That difference may be trivial to some, but to me, it's enormous.