“You know about atom smashers? Particle accelerators?” “Sure,” I said. “Praxic Age installations. Huge and expensive. Used to test theories about elementary particles and forces.” “Yes,” Arsibalt said. “If you can’t test it, it’s not theorics—it’s metatheorics. A branch of philosophy. So, if you want to think of it this way, our test equipment is what defines the boundary separating theorics from philosophy.”