Cost-benefit analysis is a weighing-scale approach to making business decisions: all the pluses (the benefits) are put on one side of the balance and all the minuses (the costs) are put on the other. Whichever weighs the heavier wins.
However, since the story constantly points out Jon's conflict with his illegitimacy and Ned's strict code of honor, many fans have come up with a theory that actually explains who they think Jon's parents really are. Fans know the theory as R+L=J.. R+L=J would refer to Jon Snow (J) being the child of Rhaegar Targaryen (R) and Ned Stark's sister, Lyanna Stark (L) rather than Jon being the illegitimate child of Ned.
Jon Snow is aliveâor at least he is on television. In the Song of Ice and Fire books upon which the HBO show is based, Jon Snow remains dead. And while last night's episode of Game of Thrones suggests that Jon Snow will return to George R.R. Martin's books, Martin still reserves the right to change how exactly the character makes his comeback.