Nomura: "The Birds are a Government simulation"
Fans: "what... does that even mean?"
Nomura: "I'll be back in 6 years"

Nomura in 6 years: "Turns out the Government was actually a simulation made by the Birds."
Fans: "WAIT HOLD UP"
Nomura: "I'll explain the rest in the next game.

Nomura In the Ultimania: "If you think about it, the birds really could've been Dogs the whole time. But I think it's better to keep players guessing."