Well, you have to define the universe at some point, and the most common definition on people's minds it's "this thing which our galaxy is in". I would presume

Well, you have to define the universe at some point, and the most common definition on people's minds it's "this thing which our galaxy is in". I would presume that common perceptions don't include such notions as "separate reality split-universes" and sets of multi-verses, and what have you.