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    Anecdotally I’ve found building apps with Ember.js and the fantastic rails_api gem to be incredibly straightforward and speedy. On top of that, the end benefit of having a mature JSON API that you can then use for other applications (iOS, Android, Windows 8, etc.) far outweighs any extra development costs (which I’ve found to be relatively minor anyway).

    Also I’m not sure what the author’s getting at when he says all Ember.js apps look the same.