/jp/ - Otaku Culture

>>33376361
Yeah, but she murdered them so she could make the definitive statement that they were dead in red truth and have it be 'the perfect examination'. If she had the detective's authority she would have known they were just play acting.
Umineko literally goes over everything relating to Knox's 7th in the logic error scene.

> "Y, you mean... wh, whaaat?!"
>...Finally, Beato realized everything. Yes, the detective's authority bestows several powers that are useful for reasoning, but it eliminates one single privilege. That is Knox's 7th. It is forbidden for the detective to be the culprit...

> "...In this game, it is impossible for humans without the detective's authority to examine corpses perfectly. So, there have been several tricks where the dead have all been faking and walking around where they please. You probably thought you could use that logic to create several impossible crimes after this. When I said that I wouldn't make the detective proclamation, somewhere on the inside, you must have said 'I've won'."

> "Without the detective's authority, I can't tell whether the victims are dead or faking. So, I needed a way to be sure. And, if possible, it would be preferable if they were removed from the game board, so that they couldn't make a mess of things later on."
https://lparchive.org/Umineko-no-Naku-Koro-ni-Chiru/Update%2064/

Not having the detective's authority makes Erika not need to abide by Knox's restriction in regards to detectives. She's fighting on the mystery side.