The 'content' of any medium is always another medium.

There is no more great men; there is only great committees.

Even mud gives the illusion of depth.

The wheel is an extension of the foot, the book is an extension of the eye, clothing an extension of the skin, electric circuitry an extension of the central nervous system.

Positively, the effect of speeding up temporal sequence is to abolish time, much as the telegraph and cable abolished space. Of course, the photograph does both.

Professionalism merges the individual into patterns of total environment. Amateurism seeks the development of the total awareness of the individual and the critical awareness of the groundrules of society. The amateur can afford to lose. The professional tends to classify and specialise, to accept uncritically the groundrules of the environment. The groundrules provided by the mass response of his colleagues serve as a pervasive environment of which he is contentedly unaware. The 'expert' is the man who stays put.

The suddenness of the leap from hardware to software cannot but produce a period of anarchy and collapse, especially in the developed countries.