The first is whether EMEs will be able to sustain global growth at near pre-crisis levels even if advanced economies continue to languish. People who put this question, I believe, are doing so as a rhetoric – to encourage analytical thinking rather than to solicit an affirmative answer.
Sure, multiple growth poles are a safety-net for the whole world, but to expect EMEs, by themselves, to lift global growth to former levels will be unrealistic. Note that EMDCs account for less than half of world GDP even when measured at PPP valuations, and only about a third of the world trade in goods and services.