A preliminary hearing is held in the lowest local court (municipal or police court), but only if the prosecutor has filed the charge without asking the Grand Jury for an indictment for the alleged crime.
On the one hand, Descartes argues that the mind is indivisible because he cannot perceive himself as having any parts. On the other hand, the body is divisible because he cannot think of a body except as having parts. Hence, if mind and body had the same nature, it would be a nature both with and without parts.e reaches this conclusion by arguing that the nature of the mind (that is, a thinking, non-extended thing) is completely different from that of the body (that is, an extended, non-thinking thing), and therefore it is possible for one to exist without the other.
But there is more to it than that. This is where Descartes slips from the idea of science as empirical to the idea of science as a priori, from the idea of science as a method rooted in observation and experiment to the idea of a science whose method is rooted in the demonstrations of pure reason.