The Unrealities of Time

Abstract

Is time flowing? A-theorists say ‘yes’, B-theorists say ‘no’. But both take time to be real, which means that B-theorists accept that time is real, even if lacking a property usually ascribed to it. In this paper, I ask what the different properties usually ascribed to time there are in order to draw the list of different possible kinds of realism and anti-realism about time. As we will see, there are three main kinds of anti-realism. I will argue that if time is defined as the universe's fourth dimension, there is no way time could be unreal.