The difference between Propertarianism/Operationalism/Testimonial truth, versus

The difference between Propertarianism/Operationalism/Testimonial truth, versus say, even critical rationalism, is that your opinion on any particular matter doesn’t really matter much. Its just whether you can actually do it: construct a propertarian argument operationally. I mean, **its really freaking hard***. If you can even construct the argument itself you’re probably pretty close to right. It’s not so much whether you can test the argument – like most logical constructions. Its whether you can even put one together. The hell with justifying it – what passes for testing an argument. The question is whether you can even construct one.

(Same with reverse Russian mathematics.)