Unfortunately, that rule wouldn't hold up either, at least insofar as lawyers are human beings -- you'd have to save them regardless.
Reminds me of the old joke about the biology research lab that switched from using rats for their experiments, to lawyers. When asked why they were using lawyers instead of rats, the researcher replied, "Because there are some things that a rat just won't do."
Don’t forget the rest of that joke, specifically that investigators do not get attached to lawyers, and that there are many more lawyers than purebred lab arts.