By organizing the book around types of representations, I have tried to bring together things that I think are deeply similar, though they may not traditionally have been thought to be the same. Chapters 8 and 9 focus on the role of specific content in representation, and Chapter 10 draws some general conclusions about the use of representation in cognitive models. That means that some approaches have been sketched to give the flavor of what the representational scheme is like. I have tried to provide enough references for other sources of information for people who want deeper treatments of the topics covered here. Like the travel guide, if you see something interesting, go there.
Any travel guide has biases.
For example, the authors of the Let's Go series are college undergraduates, and so there is a premium on inexpensive places to eat and drink. Other guides that cater to wealthier clientele include a different list of culinary delights. I also have my biases. My own research has focused on similarity, analogy and categorization. This research focus has had two effects on this book.