 A straightforward reduction of these arrows to entropy is probably not in the cards (Earman 1974; Horwich 1987). Consider the epistemic arrow of time. The traditional entropic account claimed that because we know there are many more entropy-increasing rather than entropy-decreasing systems in the world (or our part of it), we can infer when we see a low-entropy system that it was preceded and caused by an interaction with something outside the system. To take the canonical example, imagine you are walking on the beach and come across a footprint in the sand. You can infer that earlier someone walked by (in contrast to it arising as a random fluctuation). In other words, you infer, due to its high order, that it was caused by something previously also of high (or higher) order, i.e, someone walking.