His theory of thinking is based on clear and distinct perception which is so obvious inside of his intellect that cannot be misgiving, therefore it exists.
According to Descartes’ premise 7, where it says that God is not a deceiver nor would allow evil to deceive us, through free will we are given the ability to make decisions on our own thoughts. Thus, nor God nor evil can program what we do. For this reason, it would not be possible for an evil demon or computer to mislead humanity.
Yet, evil things happen. Following Descartes’ theory, God still exists because we can think and make decisions freely. Humanity has made poor choices, which does not mean God is teaching humanity a lesson, because the choices were made by humanity through free