Moreover, a game like Tri-Stat does not *try* to catch human nature in the stats. The nature of the character lies in how they behave, how they are portrayed and are played, not in numbers.
Numbers tell you *what* the character is. If that's the major question for you, then yes, Tri-Stat will fall short. If you are more interested in *who* the character is, with the what being somewhat secondary, then Tri-Stat can have its place.
