We arrive now at the theoretical heart of the book. In Chapters 2 and 3 we describe how the professions are changing. In Chapter 4 we explain these changes by reference to the information substructure and developments in technology. In this chapter we draw these observations and arguments together. First we develop a model to show how professional work is evolving. Then, building on all we have said and done so far, we step away from the professions and describe the people and systems that will replace them in the future. In broad terms, our focus in this chapter is on the way that we handle a particular type of ‘knowledge’ in society. We are, of course, not alone in exploring this concept. All manner of scholars have applied their minds to ‘knowledge’ over the centuries. Philosophers, for example, who specialize in epistemology ask such fundamental questions as ‘what is knowledge?’ and ‘how can we know anything?’, or again, ‘of what knowledge can we be certain?’ Sociologists study the connections between knowledge and power, culture, and class. Lawyers handle questions about the ownership, protection, and sharing of knowledge. Information theorists consider the relationships between knowledge, information, and data. We are fascinated by each of these perspectives, but for the most part they fall beyond the scope of our work. Instead, the particular type of knowledge that is our preoccupation is what we introduce in Chapter 1 as ‘practical expertise’. Now we explore this concept in greater detail, looking at how we currently create and share it, and how we might handle it differently in the future. We seek to show, in economic terms, that knowledge has special characteristics that make its widespread and low-cost production and distribution both possible, and desirable, in a technology-based Internet society. Practical expertise, or our conception of it, is the knowledge that is required to solve the sort of problems for which the professions, traditionally, were the only solution—the knowledge that is used to sort out a health worry or resolve a tax problem, for example.
