The rivalry between Jack Shepherd and John Locke was a central drama in the earlier seasons of Lost and it's not always clear who ultimately won. The series was known for its strong cast of characters and compelling mysteries, while also exploring powerful philosophical themes about science and faith. Jack, a spinal surgeon before Oceanic 815, and Locke, a paraplegic who arrived on the island suddenly able to use his legs again, presented opposing views on the matter. Jack's strenuous relationship with his father had drilled science and logic into his head from childhood, while Locke's miraculous recovery forced him to believe that something good was finally happening to him, and that he would have to follow it.

The second season's premiere was titled "Man of Science, Man of Faith," as their conflicting views had begun to divide up their camp. A power struggle played out between the two of them,...