The Long Versus Short Debate

Which is better, long content or short content? The answer depends on who is creating the content, who is reading it, what it's about, in what context it's being consumed, and how you define "better."
For the purposes of this argument, which form of content will help you best prepare to rank well in 2014? Frustratingly for some, the answer is more "both/and" than "or."
Vocus recently cited a study that showed that the top 10 results for a specific keyword search tended to be more than 2,000 words in length. The validity of that study has been debated, but it's probably fair to say that length is a proxy for depth of expertise and value delivered to the reader