Abstract
In their paper of this issue, N. Tsuchiya and H. Saigo have proposed a new approach to understand some aspect of consciousness on the basis of category theoretic notions. In my commentary on it, I will raise a few questions on a central assumption of their arguments, which their theory implicitly requires. That is, first of all, the level and the content of consciousness would be respectively represented by a category. Taking this argument, and extending their instantiation of a category of conscious content, it leads a poorly structured category such as something equivalent to a discrete category. With this, and other critiques raised in this commentary, their category theoretic formulation of consciousness would need a major revision on their presumptions to be any useful model of consciousness.
