The idea was later scrapped in favor of including series regular Boone Carlyle; this development would serve as a genesis for the character's upcoming death in a later episode, "Do No Harm".[2] The idea behind the metal surface, which would be known as the hatch for the rest of the season, came when the producers were storyboarding the season.[3] The hatch's discovery was to be introduced earlier into the episode, but was moved to the end to give the episode a cliffhanger.[2]