This paper presents a model of penalties that reconciles the conflicting accounts optimal punishment by Becker, who argued penalties should internalize social costs, and Posner, who suggested penalties should completely deter offenses. The model delivers specific recommendations as to when...

A century ago, captains of industry and their allies in government launched a social experiment in urban America: the abandonment of mass transit in favor of a new personal technology, the private automobile. Decades of investment in this shift have created a car-centric landscape with...

This working paper provides an overview of the concept and practice of forensic economics by discussing four questions concerning the domain of this discipline. The first question asks whether forensic economics is a practical or academic enterprise, or both. The second one concerns the types of...

How the law and the social norm interact with each other in the legalized modern society, whether the law completely replaces the pre-existing social norm or they coexist, and whether their interaction achieves an efficient system of social rules or there is innate inefficiency, have remained...

We consider the optimal liability rule in the case of accidents by fully autonomous vehicles. We show that when due activity is not enforceable, it is socially optimal to apply the strict liability rule to the human operator who determines the activity level and to apply the negligence rule to...

We evaluate Richard Posner's famous hypothesis that common law converges to efficient legal rules using a model of precedent setting by appellate judges. Following legal realists, we assume that judicial decisions are subject to personal biases, and that changing precedent is costly to judges....

This paper explores whether platform liability should be strict or negligence based. In the model, two-sided platforms get revenue from two sources: selling products or services to consumers and selling advertising (or information) to others. There are indirect network effects: higher consumer...

Contract law affects behavior not just directly, by ordering damages, but also indirectly, by providing information on how the parties to the dispute behaved. Information from litigation can then help third parties decide whether to do business with the disputants going forward. Contract law...

We present a new model of negligence and causation and examine the influence of the negligence test, in the presence of intervening causation, on the level of care. In this model, the injurer’s decision to take care reduces the likelihood of an accident only in the event that some...

Inherent in any judicial system is the need to allocate the burden of proof on one party. Within the realm of negligence torts, that burden is traditionally placed on the plaintiff, meaning that the plaintiff must bring forth sufficient evidence to establish negligence by the defendant. In...