 Elga’s argument proceeds by way of the example of Gretta cracking an egg described earlier, and the basic idea is that in fact World 2 above – the closest world where particular fact in the past up until shortly after 8.00 doesn’t match actuality (and, in particular, Gretta doesn’t crack the egg), there is a miracle shortly after 8.00, and thereafter World 2 evolves according to the actual world’s laws and matches actuality perfectly with respect to particular fact. Thinking in the future-to-past direction for now, consider what happens at the actual world from a time-reversed point of view: Gretta transfers the egg from her plate to the hot pan, the pan cools down and the egg uncooks, and then it leaps up into the waiting shell, which closes neatly around it. Now (to get us to World 2) insert a small miracle – at 8.05, say, when the egg is nicely cooked in the pan – altering just the positions of a few molecules, say, so that what happens (again, proceeding from future to past) is that (lawfully, once the miracle has occurred) the egg just sits in the pan, cooling down and transferring heat to the pan in the process, and then gradually rots in the way that eggs normally do (except that they normally do that in the past-to-future direction). The idea is that, while World 2 (viewed from past to future) looks exceedingly strange – after all, it involves Gretta devouring what was once a horrible rotten egg that somehow found its way into her pan and then bizarrely de-rotted – none of that is unlawful. It is just, thanks to the laws of thermodynamics, spectacularly unlikely.