Goro's knuckles turn white for a moment, as he considers and calculates; as, in truth, he pulls together a decision he made half an hour ago. "We don't have to watch it. Like you say, this is stupid. We already know what you said."

Of course, they don't know what Shido said, the second half of the conversation. That would be useful to know. And Goro has lost little of his fascination with his father. But, in the end, it's unnecessary.

He knows Ren didn't offer the same.