 Similarly, it is not clear why an account of doctrine requires a rationalization of the bilateral nature of private law litigation. Critics (such as Coleman [2001], Ripstein [2016] and Weinrib [1995]) of the doctrinal analysis project in economic analysis of law consider this bilateral nature—the fact that this plaintiff sues that defendant and not someone else—essential. They point to the doctrinal analysts’ failure to provide an essential explanation as an important aspect of the superiority of their account of private law.