A working understanding of key concepts in semiotics -including their practical application -can be seen as essential for everyone who wants to understand the complex and dynamic communication ecologies within which we live. As the American pragmatic philosopher and founder of modern semiotics, Charles Sanders Peirce put it, "the universe...is perfused with signs, if it is not composed exclusively of signs" (Peirce 1934, 302). There is no escape from signs. Those who cannot understand them and

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... he systems of which they are a part are in the greatest danger of being manipulated by those who can. In short, semiotics cannot be left to semioticians. But can it be left in the hands of educators? If anyone is capable of bringing such a radical collection of papers in the field of semiotics into conversation with the discipline of education, it is the editor of this book,