Georgetown University Law Center
2019
Parol Evidence Rules and the Mechanics of Choice
Gregory Klass
Georgetown University Law Center, [email protected]
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Gregory Klass, Parol Evidence Rules and the Mechanics of Choice, 20 Theoretical Inq. L. 457 (2019).
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Part of the Contracts Commons, and the Evidence Commons
457
Parol Evidence Rules and the
Mechanics of Choice
Gregory Klass*
Scholars have to date paid relatively little attention to the rules
for deciding when a writing is integrated. These integration rules,
howeve r , a re as dark and full of subtle difficulties as are other parts
of parol evidence rules. As a way of thinking about Hanoch Dagan and Michael Heller’s The Choice Theory of Contracts, this Article suggests we would do better with tailored integration rules for two
transaction types. In negotiated contracts between firms, courts
should apply a hard express integration rule, requiring firms to say when they intend a writing to be integrated. In consumer contracts,
standard terms should automatically be integrated against consumer-
side communications, and never integrated against a business ’ s
communications. The argument for each rule rests on the ways parties
make and express contractual choices in these types of transactions.
Whereas Dagan and Heller emphasize the different values at stake in
different spheres of contracting, differences among parties’capacities
for choice — or the “mechanics of choice” — are at least as important.
IntroductIon
Contractual obligations are chosen obligations. They are chosen in two senses.
First, each party must choose to enter into an agreement that generates the
contractual obligations. Each must assent to the deal. Second, the parties have
the ability to choose the terms of their agreement, and thereby determine the
content of their contractual obligations. The parties can decide what the deal is.
- *
- Agnes N. Williams Research Professor, Professor of Law, Georgetown University
Law Center. This Article was presented at the Freedom, Choice, and Contract
Conference, Columbia Law School, October 13-14, 2017, and benefited from
the questions and feedback I received there.
Cite as: Gregory Klass, Parol Evidence Rules and the Mechanics of Choice, 20
TheoreTical inquiries L. 457 (2019).
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Theoretical Inquiries in Law
[Vol. 20.2:457
Many rules of contract law address how parties make those choices.
Some of those rules are about parties’ choice to enter into a legally binding agreement. These include rules governing offer and acceptance, implied-in-
fact contracts, Statutes of Frauds, and formation defenses. Other rules are
about how parties choose terms. Examples include hierarchies of interpretive
evidence, plain meaning rules, default obligations, and contra proferentem.
Taken as a whole, these rules do two things: they tell adjudicators how to
decide whether and how parties have exercised their power to choose, and
they inform sophisticated parties what they must do to exercise a legally
effective choice.
ThisArticle argues that contract theorists — scholars exploring the normative
basis of contract law — should pay more attention to how contracting parties
make choices and to how the law determines the choices they have made. Or as I put the point below, theorists should pay attention both to the mechanics
of choice and to legal mechanisms for choosing. I make the case by exploring
the relevance of both to Hanoch Dagan and Michael Heller’s choice theory of contracts.1 Dagan and Heller argue that the core value of contract law is to enable party choice. Yet they pay little attention to the mechanics of choice or legal mechanisms for choosing. That neglect, I argue, renders their theory incomplete, and at times Panglossian.
I support that claim through a close examination of one mechanism of
contractual choice: the parol evidence rule. When parties reduce their agreement
to writing, courts sometimes treat that writing as dispositive of the terms in it,
or even of the parties’agreement as a whole. In common law jurisdictions, the
primary rule for determining when a writing is given special evidentiary weight
is the parol evidence rule. The term “parol evidence” refers to evidence of the
parties’ agreement other than the writing at issue. A writing that operates to
exclude parol evidence of terms is “integrated.” Parol evidence rules determine
when writings are integrated and when if ever parol evidence may be used to contradict, supplement, and sometimes interpret the terms contained in an integrated writing.
My analysis of parol evidence rules starts from Dagan and Heller’s suggestion
that we do better with different laws of contracts for different transaction
types, or “spheres of contract.” Examples of such spheres include agreements
between firms, employment contracts, consumer contracts and intra-family
agreements. I examine how, starting from a clean slate, we might design a
parol evidence rule for each of two such spheres: negotiated contracts between
firms and consumer contracts. Neither of the resulting parol evidence rules corresponds to the rules one finds in the case law or treatises. For negotiated
1
hanoch Dagan & Michael heller, The choice Theory of conTracTs (2017).
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Parol Evidence Rules and the Mechanics of Choice
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contracts between firms, the analysis suggests a hard, strict integration rule,
requiring firms to say when they intend a writing to be integrated and treating
such expressions as dispositive. For consumer contracts, I argue for automatic
integration of standard terms against consumer-side parol communications together with a mandatory rule that standard terms are not integrated against
a business’s parol representations or promises. The argument for each rule
relies in part on the social values at stake in each sphere. But the differences
between the recommended rules reflect the different mechanics of choice
in each — how in each sphere parties can and do exercise their power to
choose terms. Whereas Dagan and Heller argue that local rules of contract law should be crafted in light of “the normative concerns driving different contract types,”2 this Article demonstrates that the mechanics and available mechanisms of choice are at least as important.
Along the way, this Article makes several other contributions. I reject
the English Law Review Commission’s argument that the parol evidence
rule is not a separate rule of law, but a specific application of the general
principles of contract law. I provide an analysis of parol evidence rules that emphasizes rules for integration, an oft overlooked element of those rules. I argue that contemporary formalist scholars have not been formalist enough
in their thinking about integration in contracts between firms. And I suggest
an argument for a largely choice-independent form of parol evidence rule
for consumer contracts.
Part I introduces Dagan and Heller’s choice theory, together with the ideas
of the mechanics of choice and legal mechanisms for choosing. Part II provides
an overview of existing parol evidence rules and the role of integration by
way of a critical analysis of the English Law Review Commission’s 1986
report on the rule. Part III argues that the mechanics of choice in two types
of transactions, negotiated contracts between firms and consumer contracts,
recommend different integration rules for each. The Conclusion draws a
few lessons, both for Dagan and Heller’s choice theory and contract theory more generally.
I. the choIce theory, the MechanIcs of choIce, and MechanIsMs for choosIng
At least since the Legal Realists’attack on Langdell, English-language legal
theorists have shown an affinity for lapsarian narratives. In The Choice Theory
of Contract, Dagan and Heller blame contract law’s fall from an earlier, more
2
Id. at 7.
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Edenic state on Samuel Williston. Williston’s original sin was to attempt to
construct a unified theory of contract law, taking commercial contracts as the
paradigm and ignoring the many differences in the laws that governed other
types of transactions. “This distinctive, early twentieth-century American
trajectory elevated commercial transactions to the core of contract, and, as a
byproduct, substantially obscured the generative role of diverse contract types.”3
Dagan and Heller suggest that many contracts scholars remain captive to this
Willistonian worldview, seeking out unifying principles and trying to craft
rules of general applicability.4 In fact, Dagan and Heller argue, there are many
different types, or “spheres,” of contractual transactions. Examples include agreements between businesses of various types, employment relationships,
consumer transactions, and agreements among family members. Because
different spheres implicate different values, the law should not treat all
alike. More specifically, the sometimes competing values of community and
efficiency take on different forms and receive different weights depending on
the sphere of contracting. A universal law of contract cannot take account of
the specific mix of values at stake in each sphere. We should not, therefore,
seek one big law of contract, but should construct local contract laws for the various spheres of contracting.
In addition to this intersphere legal pluralism, Dagan and Heller advocate
for intrasphere pluralism of contract types and terms. No matter the social values at stake in one or another sphere, parties’ autonomous choice should remain a guiding principle in all spheres. Party autonomy is valuable for at least two reasons. First, and most familiarly, autonomous choice is a good in
itself. Second, party autonomy addresses the fact that even within a single
- 3
- Dagan & heller, supra note 1, at 8. It is worth noting that Book V of the
first edition of Williston’s treatise, which occupies the bulk of Volume Two,
was devoted to “Particular Classes of Contract.” These included chapters on
Contracts for the Sale of Land, Contracts for the Sale of Personal Property,
Contracts of Employment and Contracts to Marry, Contracts of Bailment and of Innkeepers, Contracts of Affreightment, Bills of Exchange and Promissory
Notes, and Contracts of Suretyship. 5 saMuel WillisTon, The laW of conTracTs
§ 633, 1225 (1924).
- 4
- Dagan and Heller are not the first to suggest different contract laws for different
spheres of contracting. See, e.g., William J. Woodward, Jr., “Sale” of Law and
Forum and the Widening Gulf Between “Consumer” and “Nonconsumer”
Contracts in the UCC, 75 Wash. u. l.q. 243 (1997); Ethan J. Leib, On
Collaboration, Organizations, and Conciliation in the General Theory of Contract,
24 quinnipiac l. rev. 1 (2005); Ronald J. Gilson, Charles F. Sabel & Robert
E. Scott, T e xt and Context: Contract Interpretation as Contract Design, 100
cornell l. rev. 23 (2014).
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Parol Evidence Rules and the Mechanics of Choice
461
sphere there is no one right way to balance competing values. Party choice
provides a means of resolving conflicts between our normative commitments.5
Dagan and Heller suggest that the law should enable intrasphere choice in
two ways. First, the law should ensure that within any given sphere there is a
choice among “contract types” — pre-established or off-the-rack transaction
structures.6 Predefined contract types promote efficiency by reducing transaction
costs. But they do more than that. Contract types also enhance autonomy by
providing socially recognized relational forms that embody various mixes
of values and shared cultural meanings, thereby generating new meaningful
forms of acting together.7 Second, autonomy requires also that the parties
be granted the power to make alterations to the off-the-rack contract types
society offers. A commitment to voluntariness “implies that people should
generally be able to choose not only among various contract types, but also terms within each.”8
Although Dagan and Heller say a lot about the value of choice, they do
not say much about how parties make such choices. There are two salient
dimensions to how contracting parties exercise their powers of choice. The
first is parties’ baseline abilities to choose, and the conditions under which
they are able to make informed, autonomous and therefore valuable choices. I will call this the “mechanics of choice.”
Although Dagan and Heller do not spend many pages on the topic, they do not ignore the mechanics of choice. For example:
Sometimes, cognitive, behavioral, structural, and political economy
reasons imply that more choice may actually reduce freedom. But
those circumstances will be local to certain contract types or market structures, not universal to contract as a whole. Frankly, we just don’t
know in which contexts the probable effects of these concerns are
significant enough to justify limiting multiplicity.9
567
Dagan & heller, supra note 1, at 80.
Id. at 3.
Id. at 76 (“[W]hen contract law offers us multiple contract types, it participates in the ongoing social production of stable categories of human interaction by
consolidating people’s expectations of themselves and others. In this, law enlarges
the range of valuable options available to us.”).
8
9
Id. at 109.
Id. at 127. See also id. at 74 (“The impediments to secure contracting often
depend on the specific features of the particular contract type and therefore each
type requires its own legal facilitation.”), 106-07 (suggesting that how people choose and the design of choice mechanisms “should be . . . . a major focus of behavioral and institutional economics studies of contract law”).
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Dagan and Heller also argue that the mechanics of consumer choice suggest
mandatory restrictions on businesses’ ability to include hard-to-read terms
like arbitration clauses or class-action waivers. “[C]hoice theory implies that
[these terms’] inclusion in consumer contracts should not be able to upset
consumers’background expectation of relatively unimpeded access to courts
or to reasonably equivalent procedures for dispute resolution.”10
Dagan and Heller have less to say about a second dimension of how
parties choose, which I will call the “mechanisms of choice.” These are the tools that the law gives parties for exercising their power to choose, which
Ian Ayres has called “altering rules.”11 Consider, for example, Dagan and
Heller’s positive view of section 17.42 of Texas’s Deceptive Trade Practices
and Consumer ProtectionAct, which empowers consumers to waive theAct’s
protections.12 Dagan and Heller favor the opt-out provision, as “people should,
in some circumstances, be able to choose between purchasing a good with
the protections of consumer transaction law or by using sales law.”13 They do
not discuss, however, what a consumer must do to opt out of such protections
— the mechanisms needed to ensure a fully informed and valuable choice.
It is worth paying attention to those details. Section 17.42 requires that
“(1) the waiver is in writing and is signed by the consumer; (2) the consumer
is not in a significantly disparate bargaining position; and (3) the consumer is
represented by legal counsel in seeking or acquiring the goods or services.”14
It requires that the consumer’s counsel be independent of the business. And it requires that the waiver be:
(1) conspicuous and in bold-face type of at least 10 points in size; (2)
identified by the heading “Waiver of Consumer Rights,” or words of
similar meaning; and (3) in substantially the following form: “I waive my rights under the Deceptive Trade Practices-Consumer Protection
Act, Section 17.41 et seq., Business & Commerce Code, a law that
gives consumers special rights and protections. After consultation with
an attorney of my own selection, I voluntarily consent to this waiver.”15
10 Id. at 112.
11 Ian Ayres, Regulating Opt-Out: An Economic Theory of Altering Rules, 121
yale l.J. 2032 (2012).
12 Tex. Bus. coM. coDe ann. § 17.42 (West 2017).
13 Dagan & heller, supra note 1, at 71. See also id. at 82 (advocating that consumers
be able to “make their own (individual) choices between the ‘souk’ or ‘bazaar’
mode of ‘as is’contracting and the ‘errands’model of consumer protection law”).
14 Tex. Bus. coM. coDe ann. § 17.42(a) (West 2017). 15 Id. at §§ 17.42(b) & (c).
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Parol Evidence Rules and the Mechanics of Choice
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This choice mechanism makes perfect sense given the mechanics of consumer
choice — the difficulty of ensuring informed consumer agreement to a term such
as this. The Texas legislature appears to have been concerned that a consumer
might assent to waive theAct’s protections without fully understanding what
she was giving up, as consumers regularly assent to unread standard terms.
The resulting mechanism of choice, however, is enormously expensive to use.
One might guess that few if any Texans will exercise this power of choice the Texas legislature has granted them.
The remainder of thisArticle examines one of the most important mechanisms
of choice in U.S. contract law: parol evidence rules. A parol evidence rule
provides mechanisms of contractual choice in two ways. First, if a writing is integrated, the rule limits the evidence an adjudicator may consider when deciding what terms parties have chosen. In this way, parol evidence rules
determine how parties can exercise their legal power to choose terms: sometimes
they must express that choice in a writing. Second, modern parol evidence rules treat integration as itself a matter of choice:Awriting is integrated only
if the parties have agreed that it shall be a final statement of some or all terms
of their agreement. U.S. courts have crafted several rules for deciding when
parties have made that choice. That is, they have provided parties with various
mechanisms for exercising the choice to integrate a writing.
It is widely recognized that different U.S. jurisdictions employ different
parol evidence rules. Most accounts of those rules, however, describe one parol
evidence rule for all contracts. Dagan and Heller’s choice theory suggests a
different approach. Perhaps there is not, or should not be, one big parol evidence
rule, but local parol evidence rules for distinct spheres of contracting. Part III
explores that idea, focusing on two spheres of contracting: negotiated contracts
between firms and consumer contracts. Before getting there, however, it is
necessary to say a few words about parol evidence rules generally.
II. Parol evIdence rules: the BasIcs
It is no easy thing to summarize the parol evidence rules found in the common
law of contracts. The reasons are manifold. Parol evidence rules are complex,
with multiple moving parts. Judicial articulations of the rules often bear traces
of older doctrines modern rules were meant to supplant. There are important differences between parol evidence rules in different jurisdictions, and often