The error theory and non-factualism are two forms of irrealism formulated in semantic way.

错误论和非事实论是用语义方式表述的两种不同形态的非实在论。

In order to maintain thoroughly hsi philosophical standpoint of Anti-realism, he rejected two-valued semantics and took Intuitionist logic as the basis of his metaphysics.

了彻其反实在论的哲学立场，达米拒斥二值原则，把直觉主义逻其形而上学的基础。