"Then what is Brick's job? Just to get your attention? But it seems that you also won't be easily provoked by just such a simple thing. In fact, before Brick incited Alyosha, Alyosha had already gathered evidence and immediately cornered Brick after Brick finished boasting," Ryou concluded.
"Brick is a diversion. A diversion so it's as if we've traced an important part of all of this. It's as if we've really entered the next stage of disabling plural. They make a play within a play. Very cunning, that's what plural is like," said Alyosha.
Ryou still didn't understand. Alyosha only explained the outline of the problems related to the plural. Without explaining in detail where lies the error made by Brick. Nor do they explain what Brick did to help plurals.
They did not explain Brick's role in helping the plural plan to outwit Alyosha. And Ryou is still too early to know all that.