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Contract interpretation remains the most important source of commercial litigation and the most contentious area of contemporary contract doctrine and scholarship. Two polar positions have competed for dominance in contract interpretation. In a textualist regime, generalist courts cannot consider context; in a contextualist regime, they must. Underlying this dispute are contrary assumptions about the prototypical contract each interpretive style addresses. For modern textualists, contracts are bespoke, between legally sophisticated parties who embed as much or as little of the contractual context as they wish in an integrated writing and prefer to protect their choices against judicial interference by an interpretive regime including the parol evidence and plain meaning rules. For contextualists, in contrast, contracts are between legally unsophisticated parties in two prototypical settings. The first is the mass-market, standardized contract between sophisticated sellers and unsophisticated consumers, who cannot bargain over contractual terms; the second involves commercial parties doing business in a deeply nuanced world where formal and informal understandings mix and the meaning of a particular contract can be illuminated by the parties' course of dealings. For the contextualist, willfully restricting a court's access to information bearing on the parties' real relationship in both cases degrades judicial interpretation.

We argue that the narrow focus on which prototype should apply universally has erroneously framed discussion of the parties' choices and led to an inconclusive and limited debate about the role of courts in contract interpretation. The range of options for parties and generalist courts is much more diverse and variegated than the choice between ex ante party autonomy and ex post adjudication. We present a typology of transactional settings – the design space for contracting – sufficiently rich to capture the breadth of current contractual experience but sufficiently parsimonious to clarify the central relationship between the factors that shape the design of any given contract and the role of courts in interpreting it. We show that design and judicial response depends, first, on the level of uncertainty and, second, on the thickness of the market – whether there are many traders or few engaged in a similar class of transactions. The higher the level of uncertainty, the less workable complete, state-contingent contracts become, and the more parties develop interpretive mechanisms based on rich and regular exchange of information on a project's progress that allows each to gauge the other's capacity to define and produce a product. The greater the number of traders engaged in a transaction, the more likely that the interpretive regime – terms adapted to current need – will be provided by a trade association or, given collective action problems, a public regulator. The interplay of uncertainty and scale illuminates new forms of contracting among legally sophisticated parties unanticipated in discussions of textualist prototypes and recasts the contextualist prototypes as special cases that demand novel institutional responses, including generalist courts sufficiently versed in the parties' practices that they resemble early courts of equity. More generally, our analysis reveals a surprising complementarity between public regulation and common law adjudication in a variety of settings. Contractual interpretation today should attend to today's contracts and courts; our aim is to escape the stalemate between textualists and contextualists and open the way for doctrine and debate to support the novelty of contemporary contracting practices.


Contracts | Law

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