Problems in defining this kind of language precisely, e.g., are objects seen in microscopes observed or are they theoretical objects, led to the effective demise of logical positivism in the 1970s.
问题在于精确地定义这种语言，例如，物体是在显微镜下观察到的还是它们只是理论上的对象，导致了逻辑实证主义在1970年代的实际消亡。