The communication of the message from the man to the machine is one factor to be considered. The other factor is the communication of the responding message from the machine to the man. Consider the word processor (i.e., Microsoft Word) you are currently using.
In an essay, discuss how you are commanding the machine to do certain things and how the machine is responding to the commands. Discuss how this could go wrong and what could be done to prevent a failure from occurring. If the machine fails, how do you ensure that the work is completed?