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New Yorker
That was a short way of saying, what they are really working to produce is an emotional response in the audience, us. That ecstatic, orgasmic stadiumful of God-walks-into-the-room that happens at a great U2 show? I'm pretty sure that's what it's all about for them, that the ability to do that thing is the standard by which they judge their music.
They can do that with the previous albums. They can be a little more daring with this one all they want if they decide to do arenas and sell out regardless. Heck they can be even more daring and choose to do music halls and gigs for that matter.