: How the episode resolves the "First People" mythos by revealing it as a temporal bootstrap paradox, where Walter’s future actions are the literal cause of the past he tried to solve.
: This episode introduced a unique, gray-toned credit sequence featuring futuristic concepts like "Brain Porting" and "Temporal Plasticity," but also abstract concepts like "Hope" and "Water". Character Deconstruction : [S3E22] The Day We Died
: His presence in the prime universe as a leader of the "End of Dayers" reflects a tragic symmetry; he seeks to make Peter feel the same pain he felt when his world was stolen. : How the episode resolves the "First People"