Multiverse just passes the buck on.... The idea of a Multiverse just passes the buck on to another order of magnitude of a cosmic scale. If we are simply one Universe of infinite Universes in a larger Multiverse, then why can't there be a 'Megaverse' that contains infinite 'Multiverses'? In addition, if it is true that we are one Universe and there are infinite parallel Universes a few problems arise: 1) What is the smallest difference between adjacent Universes that still makes them distinctly separate? For example, say there is a Universe beside ours that has played out precisely as ours has for 13.7 billion years, but in 2 minutes time from now a single leaf falls off the tree outside your window that did not fall off in the other parallel Universe. Is this the point that our parallel Universe truly detaches from ours and becomes separate, or is it the point that this parallel Universe is actually becomes born and in fact it never existed up until this point because it was superimposed on ours? 2) The question then evolves to why should a leaf falling be the smallest event that constitutes a difference between our Universe and a parallel one? Why shouldn't the bacteria on the leaf that weakened it and caused it to fall be the smallest difference defining event? Or why shouldn't the oxygen atoms the bacteria metabolized 10 minutes before attacking the leaf that gave them the strength to finally make the leaf succumb be the smallest difference defining event? Or why not the temperature of the Cosmic Microwave Background Radiation that held at 2.7 degrees Kelvin just long enough for Earth to capture the oxygen atoms from free space? So you see, just how small does/can a difference defining event have to be? Planck scale? or less even? 3) What about time? Say we have two Universes that are babies (still singularities) and we know for certain that once allowed to explode, each Universe will expand and fizzle out over several billion years in exactly the same manner even to the smallest degree. Now we introduce a condition where we set one Universe off a day earlier than the other Universe. To a person watching all this happen from above in their Multiverse, its clear that no, these two Universe's are not identical because the Universe that was born earlier, has all its particles in different positions from the Universe that was born a day late. However, if you inserted 2 observers from your Multiverse into these 2 Universes respectively, so that they could both watch the 2 Universes expand and collapse over billions of years, both observers would come back to your Multiverse after the experiment was done and report that yes, indeed they both observed the exact same Universe. Of course, one observer would leave a day earlier, and one would come back a day later, yet still, both once inside your Universe would say they lived the same life for a 100 billion years or whatever. So you ask, what's the point of what I just said? The point is this, say the experiment now decides to start one Universe a nanosecond before the other Universe. The experimenter watching the Universes play out again would see that yes, they are very similar indeed, but even a nanosecond is enough time for a photon to travel a great distance in space, so he would have to say that the 2 Universes are different when he takes snapshot pictures of them and compares. Realizing that even a nanosecond is more than enough time to define two Universes as distinctly different, the experimenter devises one last attempt to create two identical Universe's in both space and time. This time the experimenter starts one of the Universes before the second by a time interval of only the 'Planck time' (the shortest theoretical piece of time possible). Finally the experimenter is satisfied that when he studies his instant snapshot photographs of each Universe, that yes, they are in fact not only spatially identical but temporally identical as well. I just made that story up quickly, if anyone sees flaws in logic or scientific plausibility please feel free to criticize and correct me. Thanks, Order.