What was the most impressively clear and concise answer in 2016?
Note that a clear and concise to a very simple question is not necessarily particularly impressive.
Vote either by posting an answer linking to a clear and concise answer and giving a brief description of why that answer should win, 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.