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In this article, we define a class of revised path—dependent processes and characterize their basic properties. A process exhibits revised-path dependence if the current outcome can revise the value of a past outcome. A revision could be a change to that outcome or a reinterpretation. We first define a revised path—dependent process called the accumulation process: in each period, a randomly chosen past outcome is changed to match the current outcome and show that it converges to identical outcomes. We then construct a general class of models that includes the Bernoulli process, the Polya process, and the accumulation process as special cases. For this general class, we show that, apart from knife-edge cases, all processes converge either to homogeneous equilibria or to an equal probability distribution over types. We also show that if random draws advantage one outcome over the other, then the process has a unique equilibrium.

Since their first emergence in the work of Paul David thirty years ago, the dual issues of Path Dependence and Lock-In have become critically important subjects in the fields of economics, sociology, and business strategy. Theoretical and public policy debates on these issues have arisen, addressing whether markets consistently choose the best products. This collection presents each side of the debate, bringing together key publications that initiated this literature with the later works that criticize or defend many of the early claims. Both the theoretical and empirical foundations of Path Dependence and Lock-In are examined along with the role of network effects. An original introduction by the editors is included to situate each article in its wider context