[robynnee]

I do not ascribe to any one hypothesis about where the "other" universes may be. Some or none might be rolled up in the one we know. I do not think that they are parallel, however. Some may be next to ours if the "bubble" on the brane hypothesis is born out. Others could be spaced along the brane and be so far from us that we would never be able to prove they are there. Also, it could be likewise the case that the "bubble" we are on is a singular event. I think the highly unlikely, though.
I do think that there are other universes, however I think there needs to be much more data collected, and much more thinking done before any definitive answer to this puzzle can begin to emerge. The "belief" in the multiverse hypothesis smacks too much of "religion' for my liking and thus I must keep my thinking on the subject open to be compatible with scientific thinking.
(I vehemently dislike those little similes and iconic thingies)