[ Genos just acknowledges her unspoken words quietly and nods. He might not be suffering like the others but he doesn't deny that there is quite a bit of that happening among the other inhabitants. ]

According to them it is to fix an error that occurred due to aliens who corrupted our code. [ Look he's a cyborg, that powerpoint was something he could actually somewhat process unlike most people. ]

However, given what has happened so far, I'm not certain that is not the complete truth.