McLuhan reading - difference between hot and cold media

I'm not sure if I agree with the notion of putting hot and cold media into binary categories. From my understanding, McLuhan defines hot media as having less detail and being on a much larger viewing scale, while cold media is assimilated as being scaled down with a lot of detail therefore being multi-sensory. I would have labeled them oppositely, with hot being the multi-sensory and cold media as being one dimensional.