一般来说,实在论的含义比较模糊,但实在能通过真理、可检验性等概念在语义学中得到严格的规定。波普尔并没有很好地理解塔尔斯基的真理定义和语义学方法,他的第三世界理论建立在一些语义学概念的误用之上。实际上,从波普尔确认的哲学前提出发,语义学要求他应该是“内部实在论”者,而形而上学实在论却是他所信奉的先验教条。 In general, the meaning of realism is rather vague, but it can be strictly regulated in semantics through the concepts of truth and testability. Popper did not understand Tarski’s truth definition and semantics well. His third world theory is based on the misuse of some semantic concepts. In fact, from the philosophical premises Confirmed by Popper, semantics requires him to be an “internal realist”, while metaphysical realism is a transcendental doctrine which he believes.