If it is true that stuff is sucked inside our universe from the parent universe, I imagine the same must be true for "our" black holes: they suck matter from our universe to the child universe inside them...
And having the sum of stuff sucked in and sucked out to be zero, there should be a limit to the number (or dimension) of black holes our universe can have (?)
And having the sum of stuff sucked in and sucked out to be zero, there should be a limit to the number (or dimension) of black holes our universe can have (?)