Historical, philosophical and comparative methods of legal research

1. Historical legal research

Nature. Historical research studies the origin and development of legal rules, institutions and ideas, in order to explain the present law, interpret it, or show why it should change. Savigny’s historical school treated law as the product of a people’s history; Maine’s Ancient Law (1861) traced the movement of progressive societies from status to contract. In India the method is used constantly, often without being named.

Implications and applications.

• Interpretation. Courts consult the Constituent Assembly Debates and earlier legislation to understand constitutional and statutory text; the history of a provision is part of its context.
• Critique and reform. Showing that a rule was made for colonial purposes (sedition, the police and prison laws, criminal tribes legislation) is an argument for reconsidering it.
• Explaining institutions. The history of the Bar, the courts, legal education or personal law explains why they work as they do.

Sources. Primary: statutes and their drafts, legislative debates, judgments and court records, government archives, Law Commission reports, private papers. Secondary: histories, biographies and earlier commentaries.

Steps. Define the question and the period; locate the sources; subject them to external criticism (is the document authentic, of the date and author claimed?) and internal criticism (is its content credible, given the author’s position, purpose and knowledge?); interpret the evidence in its own context; and write a narrative that explains change, not merely lists events.

Dangers. Presentism or the “Whig interpretation” (Herbert Butterfield, 1931): reading the past as a march towards the present and judging it by present values. Selection bias: surviving records are those the powerful chose to keep. Law-office history: selecting historical material to support a conclusion already reached, a criticism levelled at originalist argument in the United States.

2. Philosophical research in law

Nature. Philosophical research asks questions that cannot be answered from the sources or from data: what a concept means, whether a rule is justified, what principle best explains a body of law. Its possibilities are wide, because every legal system rests on contested ideas (rights, equality, dignity, liberty, responsibility).

Methods.

• Conceptual analysis — clarifying a concept by examining how it is used and distinguishing its senses. Hart’s The Concept of Law analysed “law”, “obligation” and “rule”; Hohfeld analysed “right” into claim, privilege, power and immunity.
• Normative argument — justifying or criticising a rule by reference to a theory: utilitarian, Kantian, Rawlsian, capabilities (Sen, Nussbaum).
• Reflective equilibrium (Rawls) — moving between general principles and considered judgments about particular cases, adjusting each until they cohere. It is close to what common lawyers do when they reconcile principle and precedent.
• Interpretive theory (Dworkin) — finding the principles that best fit and justify the settled law.
• Critical theory — exposing the assumptions and interests behind apparently neutral doctrine (critical legal studies, feminist and critical race theory).

Indian applications. The Supreme Court’s privacy judgment in K.S. Puttaswamy v. Union of India, 2017 INSC 801, rests on a philosophical account of dignity and autonomy; the decriminalisation of consensual same-sex relations in Navtej Singh Johar v. Union of India, 2018 INSC 790, relies on the idea of constitutional morality as distinct from popular morality. A dissertation that examines these ideas is philosophical research.

Limits. Philosophical arguments rarely settle a legal question on their own, because courts must also respect text and precedent; and abstract argument can lose touch with how law works. The strongest work combines philosophy with doctrinal or empirical material.

3. The comparative method

Nature. Comparative legal research studies two or more legal systems, or the treatment of a problem in them, to understand each better and to learn from their differences. Zweigert and Kötz (An Introduction to Comparative Law) distinguish macro-comparison (of whole systems or families: common law, civil law) from micro-comparison (of particular rules and institutions), and make functionalism the basic principle: compare how systems solve the same social problem, not rules that merely share a name. The common reference point, the problem both systems answer, is the tertium comparationis.

Process.

1. state the problem in functional terms, free of the categories of either system;
2. choose the systems and justify the choice (similar systems for borrowing; different systems for understanding);
3. describe each system’s answer in its own terms, including case law, practice and institutions, not only the text;
4. identify similarities and differences;
5. explain them by history, social structure, institutions or values;
6. evaluate, and draw conclusions or reform proposals for the home system.

Potentiality. Law reform (the Law Commission routinely surveys foreign law); interpretation (Indian courts cite foreign decisions as persuasive authority); understanding one’s own law by contrast; harmonisation (EU law, uniform commercial law); and teaching. The basic structure doctrine of Kesavananda Bharati v. State of Kerala, 1973 INSC 91, drew on German experience of limits on constitutional amendment, introduced to Indian lawyers by Dieter Conrad; Navtej Singh Johar surveyed decisions from several jurisdictions on the same question.

The transplant debate. Alan Watson (Legal Transplants, 1974) argued that borrowing is the main way law develops and that rules move easily between societies. Otto Kahn-Freund (“On Uses and Misuses of Comparative Law”, 1974) replied that rules tied to the political structure of a society transplant badly. Pierre Legrand went further and argued that legal transplants are impossible, because a rule’s meaning depends on its culture. The practical lesson: before recommending a foreign solution, show that the conditions that make it work exist, or can be created, at home.

How this is examined

Expect “Historical legal research: implications and applications”, “Possibilities of philosophical research in law”, or “Comparative method of legal research: nature, process and potentiality”, as essays or short notes. For each, give the nature, the method or steps, an Indian illustration and the main criticism. The syllabus wording itself (“implications and applications”, “nature, process and potentiality”) is a good structure for the answer.