"Ray Cusick, the designer, took rough notes of my ideas for the Dalek’s behaviour, the electronic eye, mechanical hands, and so on, and although I didn’t have a clear visual image in my mind, when I saw his finished Dalek design it seemed very familiar. In fact the visible part of the Dalek is only a travelling case inside which there is the Dalek itself, a shapeless brain intercommunicating and interacting with all the other Dalek brains – although later there came a need for these to be organised through a Dalek Supreme."