 Note, also, there is a significant range of views within the A-theory camp about whether there is a spacetime manifold (Moving Spotlighters think there is), or whether only present events are real (the presentist view), or whether only present and past events are real (the Growing Block view). We say more about all of these views below. A-theorists also debate whether objects themselves undergo A-theoretic change or whether it is only entire regions of spacetime that change this way.