2. Posner (economic analysis of law) thinks that the captain's practice is not necessarily inefficient from the perspective of efficiency. If Parker was doomed to die, but the captain only accelerated the speed of death and saved three lives, then the social benefits far outweigh the illegal social costs, so the captain should not be held accountable.
3. Judging from the deterrence of criminal law, the punishment of the captain can't avoid the occurrence of similar things in the future, so the punishment of the captain is meaningless.