Weighing axioms
For all sentences Fact1, Fact2, ..., Factn (for some positive natural number n), State_of_affairs, and its opposite Not_state_of_affairs, and all terms pros and cons,
Outweighs(pros, cons, state_of_affairs) and Outweighs(cons, pros, not_state_of_affairs) are not both true.
The pros as reasons for state_of_affairs cannot outweigh the cons and the other way around at the same time.