 Building on work on episodic future thought, Michaelian (2016c) treats episodic memory and episodic future thought as processes carried out by a common episodic construction system. Both processes draw on stored information originating in experience of past events—that is, on memory traces—in order to construct representations of events. Episodic future thought obviously cannot draw on traces originating in experience of represented events, simply because the relevant events have not yet occurred. Similarly, episodic memory does not necessarily draw on traces originating in experience of represented events: in some cases, it may do so, but the episodic construction system, because it is supports both episodic memory and episodic future thought, is not designed in such a manner that it always does so. Michaelian’s version of the simulation theory, then, implies that an appropriate causal connection is not a prerequisite for remembering. Building work on episodic counterfactual thought, De Brigard (2014a) treats episodic memory as one function of a system devoted to the construction of possible past events—not only events that actually occurred but also events that might have occurred but did not. De Brigard’s version of the simulation theory, too, would seem to imply that episodic memory may in some cases draw on traces originating in experience of represented events but that it does not always do so.