Already we are very close to Derrida’s basic argumentation. The basic argumentation always attempts to show that no one is able to separate irreplaceable singularity and machine-like repeatability (or “iterability,” as Derrida frequently says) into two substances that stand outside of one another; nor is anyone able to reduce one to the other so that we would have one pure substance (with attributes or modifications). Machine-like repeatability and irreplaceable singularity, for Derrida, are like two forces that attract one another across a limit that is indeterminate and divisible. Yet, to understand the basic argumentation, we must be, as Derrida himself says in Rogues, “responsible guardians of the heritage of transcendental idealism” (Rogues, p. 134; see also Limited Inc, p. 93). Kant had of course opened up the possibility of this way of philosophizing: arguing back (Kant called this arguing back a “deduction”) from the givenness of experience to the conditions that are necessarily required for the way experience is given. These conditions would function as a foundation for all experience. Following Kant (but also Husserl and Heidegger), Derrida then is always interested in necessary and foundational conditions of experience.