If we assume 24 bits per degree of freedom, a complete position of the human body can be described by an image that is 10 x 10 pixels in size. The eye however can process color imagery 1400 x 1400 pixels in size. Thus we collect information 20,000 times more effectively than we express it, if only gestures are considered. There are two places to look, and three comparisons to make. Speech is slightly faster.
Experienced signers can almost keep up with careful speakers.
Speech proceeds at 180 words per second, typewritten gesture is about a third of this figure. Thus our ability to express ourselves exceeds the rate at which we can take information in by many orders of magnitude. This is important, and shows the prejudice imposed on us by the current generation of input devices. Perhaps the fastest way to help us communicate it to enable us to use gestures to make movies that express how we feel, and what we want to communicate.