Friday, February 3, 2017

The Math Behind the Jury Selection Problem

I recently served on the jury for a trial in the county superior court system, and contrary to popular belief it turned out to be an interesting experience. The ordeal gave me confidence in the idea of being judged by a jury of one's peers, and I came away with an appreciation of the fact that the responsibilities of a jury are precise and straightforward, much like the role of computer hardware (jurors) carrying out the instructions of a software program (law) given a set of well-defined inputs (evidence).

As I sat through the initial jury selection process, I also got to thinking about some of the mathematics behind the process. In particular, is there a way to answer the two questions on every prospective juror's mind: will I be selected as a juror and how long is this process going to take?