The basic concept of "Silent Language" is that much of our communication is non-verbal, but that it consistently follows cultural and linguistic patterns, just as spoken and written communication does. The major difference in non-verbal communication is that it is mostly subconscious.
The book revolves around the idea that all cultural conventions can be classified as either formal, informal, or technical. Although he spends an entire chapter introducing this concept, I personally found the distinctions a bit confusing, although I do believe that the author has an important insight.
One of my favorite concepts was the idea of 'spacial accent,' which describes the size of and culturally-specific behaviors associated with that invisible zone we all carry around with us. This concept helps explain why Europeans (outside of the British) generally don't queue, and why this so aggravates Americans (and presumably Brits). The concept of 'order' also helps explain different behaviors in forming lines (American belief in 'first come, first serve, is culturally relative). Besides speaking about space, he also discusses the cultural aspects of time, which he also describes in terms of an 'accent'. (He deals with both space and time more fully in two of his other books.)
Hall makes quite a number of connections between cultural behavior, these three types of cultural convention, and specific forms of expression. Examples include: --Why scientists are terrible writers (one of several digressions away from non-verbal communications) --A very believable explanation of why art is art --Why long-range planning is rare in America
--A concept of sacred place that anticipates the recent idea that men retreat to personal 'caves'
All in all, I found this an enjoyable and enlightening book. I wish that it could have been more clear in spots, and I think it is fair to say that some of his ideas are more fully worked out in some of his other books. My only real complaint is about the quality of Anchor's reproduction, which uses a cheap paper that cannot withstand normal highlighters at all (try the wax Textliners from Faber-Castell).
However, the book was limited in its focus, given that this phenomenon does not apply to North Americans only, but to anyone wishing to travel to a foreign country, whether on business, or recreation. One could say that in order to understand it, we may substitute our own experiences into those given by the author.
But culture can only be understood in social, economical, historical and political contexts. It is these contexts that shape or influence our perception, and the way we relate to others. Therefore, if Hall seeks to appeal to the intelligent , culturally diverse, non-technical audience, he should make the book more culturally relevant. In doing so, however, he must avoid generalisations that may make the text too simplistic and lose its focus.
An overall interesting book.