Managing UI complexity is hard. State exists on the server, in browser memory and in the DOM, all mutating over time. Keeping it in sync is easy at first, but as you dial up the interactivity things get buggy and fragile. Is there a simpler way? We'll look at building apps that minimize mutable state and embrace a simpler, functional event/data flow with Facebook's React.

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http://amara.org/v/FSPH/