Yamamoto said nothing, but picked up the sake flask and started to pour for Cortez. He filled the cup with four even pours from the bottle. He started to repeat the same precise ritual with Raven, but Doc picked up the cup after the third pour and gently blocked Yamamoto’s effort to fill the last quarter of his cup. Only after Yamamoto filled his own cup with three even pours did I begin to suspect that the number four had some significance.