Comparative causation is the only tort regime that allows parties to share an accident loss in equilibrium. The sharing of an accident loss between a nonnegligent injurer and his nonnegligent victim spreads activity level and R&D incentives between prospective tortfeasors and their victims. This...

Shavell (1980) established that all existing tort regimes fail to incentivize optimal activity levels. The bearer of residual loss adopts a socially optimal activity level, however the non-bearer of residual loss will adopt an excessive level of activity. In this paper, we explore alternative...