I'm still using it to mean "consistent with a principle of law." The idea of "rational" is closer than "proportional," but it still loses a lot of nuance. The

I'm still using it to mean "consistent with a principle of law." The idea of "rational" is closer than "proportional," but it still loses a lot of nuance. The issue with profiling is that the justification is "this person resembles a criminal," rather than "I have reason to believe a crime has been committed." Even if your methods have good precision and recall, this approach is not consistent with an existing principle of law.