Werner turns the fine-tune dial fractionally, and abruptly the voice booms into his ears, Dvee-nat-set, shayst-nat-set, davt-set-adeen, nonsense, terrible nonsense, pipelined directly into his head; it's like reaching into a sack full of cotton and finding a razor blade inside, everything constant and undeviating and then that one dangerous thing, so sharp you can hardly feel it open your skin.