For physicists to complete the entire task of physics without ever having set out from Earth to explore the universe — and the ratio of comprehension to capability here isn’t even close — would be like the old ideal of the rationalist philosopher who might deduce the entire system of the world from a sturdy chair in his study, or like Emily Dickinson who might feel a whole life through her Amherst window.  On the other hand, should it be possible, it will be a minor demonstration of the homogeny of the universe: it will have turned out that any given place was as good as any other for the task of comprehending the entirety of the thing.