“The critical information that we get is that Peter is 'important' for some future event... September then slugs him with the Altivia's baby news.” Den of Geek · 14 years ago

: Critics at Wikipedia and SciFi Vision highly praised Jared Harris's portrayal of the "calm, casual amorality" of David Robert Jones.

“Peter was erased, for a while... All the differences we see in the "current" universe are just how universe A would've been, minus-Peter.” Reddit · r/fringe · 14 years ago

is widely considered a "game-changer" for the series, famously unveiling the origin of the Observers as humans from a distant future. Critics generally praised the episode's high stakes and mythology reveals, though some found the early exposition slightly heavy. Draft Review Highlights

: This episode explains that the Observers are one possible evolution of humanity who traveled back in time. It also clarifies the disappearance of Peter's son, Henry, noting that both Peter and Henry ceased to exist when Peter stepped into the machine.