  Kant calls the first stage the Transcendental  Aesthetic.[3]  It is about what space and time must be like, and how we must handle them, if our experience is to have the spatial and temporal properties that it has. This question about the necessary conditions of experience is for Kant a ‘transcendental’ question and the strategy of proceeding by trying to find answers to such questions is, as we said, the strategy of transcendental argument.