A U.S. Supreme Court mystery drew them together: the Harvard 3L, the engineer, the Jenner & Block associate, the Massachusetts Institute of Technology professor and a team of MIT doctoral students. The mystery: Who actually wrote the joint dissent in last year's health care blockbuster?

Immediately after the June 2012 ruling in National Federation of Independent Business v. Sebelius, intense speculation surrounded the authorship of the joint dissent. Was it primarily the handiwork of Chief Justice John Roberts Jr., who allegedly began writing the dissent and subsequently changed his mind? Was it Justice Anthony Kennedy? How about Justice Antonin Scalia? Could it have been both Kennedy and Scalia or another dissenter?