The doubt is methodic because it assures systematic completeness, but also because no claim is made that all—or even that any—statements in a dubitable class are really false or that one must or can distrust them in an ordinary sense. ...

What is the meaning of Cartesian doubt?

Cartesian doubt is a systematic process of being skeptical about (or doubting) the truth of one's beliefs, which has become a characteristic method in philosophy. Additionally, Descartes' method has been seen by many as the root of the modern scientific method.

What is metaphysical doubt?

This avenue is known as clear and distinct perception, and, according to Descartes, it is what is necessary to be certain about a thing. However, a supreme God could easily be deceiving him even when he thinks he is correct as a result of this clear and distinct perception. This is known as the metaphysical doubt.