In the previous episode of this blog we have seen how the interaction between man and his work has changed over the course of humanity's evolution. The invention of tools and machines has meant that man has no longer had direct physical contact with his work piece, and thus has not been able to feel and feel it. Also, the energy used became increasingly greater and could no longer be regulated "by hand". New ways of interaction between man and machine were sought and found: Sensors, display instruments, controls.

This is the first part of a continuing story in which we want to shed some light on how, in the course of his development, man learned to interact with the things in his environment before he set about influencing the form of interaction in the next step. How can we optimally produce and use HMIs (Human-Machine-Interfaces) if we do not know and analyse the task from the root?