How could you have ever doubted the technical skills of our lovely heroine? It’s not like she regularly gets attacked by her own inventions, or lost the war for her country by blocking a missile silo with two thousand pounds of underpants, or anything like that.
Because the device works, Chell can now control the flow of all three gels that she needs to build a ladder to the moon--two of the gels in these pipes, and the Skywalk Gel in that lead drum in the back of the dump truck. She can adjust the nozzles those gels flow from too, and after some skillful maneuvers with the joysticks all of the gels land on the same spot.
Chell frolics in the toxic gel flow, sliding down a hardened arc of Skywalk Gel and standing perfectly still as Conversion Gel smacks her in the head and pirouetting across Propulsion Gel.
After a good long while of this nonsense the inner voice of reason speaks aloud in Chell's brain-damaged mind. It is a voice that sounds exactly like the happy announcer guy who speaks over the intercoms in Aperture, and he feels he needs to remind her to get a move on: "Preparation phase is [complete]. Construction phase is [ready to begin]."
whats the name of the music