Neither does a radiologist but yet we trust them to read a CT scan. Your relatives can sue if there is malpractice, but in practice, misreading happens, and nobody goes to jail for that.

Everything performs a particular task to the best of its ability and we all accept the level of risk we are willing to tolerate. If machines gain trust from enough sources, it will be accepted.

All I'm saying here is (if you walk back the necessity of having "skin in the game") -- all I'm saying here is, we regularly trust our lives to situations and people we expect to reasonably fulfill a given task. Most of us get in an elevator, or drive in a car, or even just buy food from a store.