 Handlen felt that the episode's premise and ending were poorly executed, as "trying to balance possible truths while maintaining the plausibility of both is incredibly difficult to pull off on a long-running show", adding that the episode "comes down on the only side of the fence it really could" given that "there've been too many scenes of shape-changing bounty hunters and mystical alien healers to really let this idea play out know in any real way".Robert Shearman and Lars Pearson, in their book "Wanting to Believe