The Chewbacca Defense (From South Park):
Cochran: ...ladies and gentlemen of this supposed jury, I have one final thing I want you to consider. Ladies and gentlemen, this is Chewbacca. Chewbacca is a Wookiee from the planet Kashyyyk. But Chewbacca lives on the planet Endor. Now think about it; that does not make sense!
Gerald Broflovski: Damn it! ... He's using the Chewbacca defense!
Cochran: Why would a Wookiee, an 8-foot-tall Wookiee, want to live on Endor, with a bunch of 2-foot-tall Ewoks? That does not make sense! But more important, you have to ask yourself: What does this have to do with this case? Nothing. Ladies and gentlemen, it has nothing to do with this case! It does not make sense! Look at me. I'm a lawyer defending a major record company, and I'm talkin' about Chewbacca! Does that make sense? Ladies and gentlemen, I am not making any sense! None of this makes sense! And so you have to remember, when you're in that jury room deliberatin' and conjugatin' the Emancipation Proclamation, does it make sense? No! Ladies and gentlemen of this supposed jury, it does not make sense! If Chewbacca lives on Endor, you must acquit! The defense rests
The Reaper Defense:
Ladies and Gentlemen of the supposed galaxy, this is the Catalyst.
The Catalyst is a Reaper from Dark Space, but the Catalyst is the Citadel in our galaxy. Think about it: that does not make sense!
Why would a Reaper, a huge metal squid, want to come to our galaxy and kill organics so that synthetics don't have the chance to kill organics. That does not make sense! But more important, you have to ask yourself: what does this have to do with the stated goal? Nothing. Ladies and gentlemen, it has nothing to do with the stated goal! It does not make sense. Look at me, I'm a ghost child telling you how killing you is actually keeping you safe! Does that make sense? Ladies and gentlemen, I am not making any sense! None of this makes sense! And so you have to remember, when you're on that platform deliberatin' and conjugatin' the emancipation of every organic nation, does it make sense? No! Ladies and gentlemen of this supposed galaxy, it does not make sense! If the Reapers want to kill you in order to save you, you must submit! The defense rests
There, plot hole solved.