Presenting a rigorous examination of the place and significance of time in economic theory, Douglas Vickers takes up the interrelated issues of uncertainty, ignorance, and criteria of choice. In the discussion of these questions he explains that the conventional thought-forms of probability are not generally applicable to theory-building in economics. To remedy this he provides a completely new paradigm of choice.   The extent to which time has influenced, or been excluded from, economic theory is discussed on four levels: the banishment of time in general equilibrium theory; the incorporation of logical time, in pseudotemporal dynamic analysis in some widely adopted mathematically structured systems; the construction of ceteris paribus dynamics based on conventially determined behavi∨ and the analysis of in-time economics, or the results of incorporating into economic theorizing historic time, ignorance, and uncertainty in a nonprobabilistic sense. A scheme of choice and decision making is presented that incorporates the concept of "potential surprise" in place of probability.   Economic theorists and scholars in related disciplines will appreciate the originality of the book's critique of the neoclassical system; its tracing of some of the most relevant intellectual history that sets off the traditions of Keynes and the post-Keynesians from the neoclassical system; the clarification of the meaning of - and the dissent from - probability theorizing in economics; and the treatment of the relevant epistemological foundations of the subject.