"The Why of Fry" is the tenth episode in the fourth season of the animated television series Futurama. It originally aired in North America on April 6, 2003. The episode was written by David X.
Cohen and directed by Wes Archer. In this episode it is revealed that Fry's cryogenic freezing and arrival in the 31st century was not an accident, but a calculated plot by Nibbler to save the universe. It is one of two episodes that do not contain Professor Farnsworth.
Fry feels useless after Leela and Bender return from a mission without him and after Leela asks Fry to walk Nibbler while she goes on a date with Chaz, the mayor's aide. Fry is convinced the only good he serves is to clean up after Nibbler, but Nibbler tells him otherwise. Having never heard Nibbler talk, Fry is dumbfounded as Nibbler knocks him out and takes him to Eternium.
The Nibblonians explain that Fry lacks the delta brainwave due to a unique genetic disorder he acquired after becoming his own grandfather (in "Roswell That Ends Well"). This rendered him immune to the attack of the Brainspawn a few months prior (in "The Day the Earth Stood Stupid"). The Nibblonians reveal the Brainspawn's plan to collect all knowledge in the universe, store it in a colossal memory bank called the Infosphere, and destroy the rest of the universe.
Because of his immunity, Fry is the only person who can stop them. The Nibblonians give Fry a "Quantum Interface Bomb" which will send the sphere into an alternate dimension forever and instruct Fry to implant it. As the Infosphere collects the last data, Fry enters riding the Scooty Puff Jr.
After he plants the bomb, Fry is discovered when he asks the Infosphere's computer several frivolous questions. Fry tries to escape, but the Scooty Puff Jr. falls apart, trapping him.
Fry activates the bomb anyway, and despite being doomed to enter the alternate universe, he is glad that his life had a purpose: "leading good to victory over evil".