The human mind is a tiered confection whose development is determined in part by the interaction between hand and eye. Human beings are supposed to wiggle. A child learns to perceive depth by exploring the world on belly and then on foot. A fetus in the womb signals its quickening into life by kicking against the mother. This gestural interplay links separate individuals through shared physical experiences, initiating a process of communication which, with education can result in written dialogue.
Language arises from movement.
The fixed head and hand position imposed by the conventional keyboard input system is a relict of an era when design ignored human needs. The lay-out of the keyboard was established to prevent keys from jamming. The high rate of injury associated with typing on conventional keyboards illustrates the costs of designing to protect the machine not the human user. Proper design would allow for children to develop language skills while using their hands and eyes in a wide range of positions. Many human cultures are based upon the brush or the pen.