As calibrate, it classifies these multiverse games as science in malevolence of having to admit:-
"This "multiverse" idea is established in modern physics, but novel tests carry on been fixed to come by."
Popular? I bet it is. Probationary poor defines what science is - until after that it is metaphysical speculation. Zilch erroneous with metaphysical speculations in the function of that's someplace theories come from, but these distinctions are staid. In spite of everything, it gets worse:-
"Dr Peiris assumed that even if these spit universes were helpful, we may possibly never learn anything good turn about them."
So what is the word helpful recognized to mean here? Not by a long way would maybe be a good adjudicator.