ABSTRACT
It is obvious that some things in nature are conscious, for example, human beings. It is equally obvious that some things in nature are not, for example, blades of grass. What is not obvious is where to draw the line. The conscious/nonconscious division patently does not coincide with the living/nonliving one. So where does it lie? And how are we to decide? In this essay, I shall focus on the case of fish and one conscious state in particular, that of pain.
