I am missing something in my reading of the article "Time from quantum entanglement: an experimental illustration" (http://arxiv.org/abs/1310.4691). One of its premises is that Wheeler-DeWitt equation makes the universe appear as "timeless" from the "outside" (whatever that it: the same problem in positing a universal wave function, but let's not get into that). But in reading descriptions of this (e.g., http://en.wikipedia.org/wiki/Wheeler–DeWitt_equation) although time is not explicitly mentioned in the equation, it is implicit in the way it is set up. So can one really talk about a timeless universe? Then, another problem: the "Time from quantum entanglement" paper purports to present time as an emergent phenomenon from entanglement, but the toy universe presented there seems to use time in its set-up, so that it seems one is defining time in terms of time. So is time really an emergent phenomenon there? Oh, and since the Wheeler-deWitt equation has both quantum and general relativistic elements, I wasn't sure which of the two rubriks to put it under. Thanks in advance for setting me straight.