The growing block view of time can be seen as the combination of two theses. First of all, the growing block view is committed to a dynamic account of time, on which there is an objective, changing present. The growing block conception of time shares this commitment with a number of other A-theoretic accounts of time, including presentism and the moving spotlight theory. The second commitment is ontological; past and present times exist, while future times do not exist. On the growing block view, there is a block of objectively past time-slices and one present time-slice. As the present changes, new present slices are added to the block. The combination of these dynamic and ontological commitments means that the growing block view of time is often portrayed as a middle ground between presentism and eternalism and as a hybrid of A- and B-theory.