Headscratchers / The Wrong Trousers

• Why did Gromit stay put when Feathers was marching Wallace out of the house to begin the robbery? Why did he wait for Feathers to come back before confronting him with the rolling pin?
  • Even odder he makes no attempt at all to rescue Wallace, and instead chooses to quietly snoop on Feathers for a whole day, only confronting him when it is almost too late (granted he did turn out to have a pistol, but he evidently didn't know that until that point). Idiot Ball moments aren't rare in the series, but it comes off odd from Gromit.
    • Keep in mind that Gromit probably lost time when he accidentally set off the breakfast drop system and had to change out of Wallace's clothes; by the time he was ready to go anywhere, Feathers and Wallace had probably gone too far for Gromit to find them. With that in mind, he may have decided it would be better to catch Feathers when he got back, at which point Gromit would have evidence that the penguin was up to something.
• Why did Feathers even need Wallace during his heist? The trousers don't need an operator inside them, and logically he could have just attach the claw-game helmet to them as well- no need to wait for Wallace to yawn to get past the security lasers.
  • So that he wouldn’t possibly be implicated. Feathers is already a wanted penguin and he knew that if he were somehow caught during the heist he would be facing prison. By having Wallace in the techno trousers he’d be the one seen on any security footage and potentially arrested should it fall apart before stealing the diamond. Basically, Wallace would take the fall and Feathers could get away to plot his next heist.
• How does Wallace fit in the Techno Trousers? I was never of the impression the legs were hollow.
  • Feathers modified them.
    • That, and it's pretty clear that to be of any practical use they'd have to be wearable. They weren't designed for walkies, as Wallace says, they're 'ex-NASA'.
    • We also see Gromit wearing them when he's decorating the room.
• According to Wallace, the Techno Trousers used to belong to NASA. But what exactly does NASA do in a world where a functioning space ship can be built by an inventor in his basement one evening?
  • Much like Reed Richards Wallace is useless.
  • Build functioning space-ships as well. The presence of an amateur inventor doesn't remove the need / use for a professional national space organisation, no more than an amateur astronomer looking through a telescope in his or her backyard makes the Hubble Telescope redundant. In this universe, NASA just has a bit of friendly cheese-eating competition is all.