What was, in your opinion, the best answer in 2016 which where two or more authors contributed a significant fraction of the content?

Vote either by posting an answer linking to your favorite community work, with a brief description of why it's your favorite, or by upvoting an existing post. Voting lasts two weeks, i.e. until Jan 29 2017.

This is part of the Best-of PSE 2016. If you are interested in providing a prize bounty for the winner (mostly highly upvoted answer of this meta post), please comment.


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