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.
âThe Winds of Winterâ made it plain in the Tower of Joy flashback that Jonâs mother was, in fact, Lyanna Stark - Ned merely being his uncle and guardian - but offered no clues as to his father. The chart confirms however that it is, as fans expected, one Rhaegar Targaryen.