Our perspectives of action on the environment and urban life ultimately led us to the notion of unity. Unity, here, is defined as the use of all techniques, as means, contributing to the composition of a unified way of acting. Such an interrelated ensemble must be envisaged as incomparably more far-reaching than the old domination of certain senses (like sight, for example), or than the present sporadic application to anarchic use of computers, specialized technology or of scientific investigations such as ecology.