Independent Indian: Work & Life of Dr Subroto Roy

 

Philosophy of Economics

On the Scope of Reason in Economic Inquiry

Subroto Roy
© 1989, 1991, 2007 Subroto Roy

First published by Routledge of London & New York , 1989, in the International Library of Philosophy,

Library of Congress HB72.R69 1989

British Library 330’.01-dc19
Economics – philosophical perspectives
ISBN 0-415-03592-9

Reprinted in paperback, 1991
Library of Congress HB72.R69.1991
British Library 330’.01-dc20
ISBN0-415-06028-1

Preface to 2007 WordPress.com Republication

 

This book germinated when I was 18 or 19 years of age in Paris, Helsinki and London, and it was first published when I was 34 in Honolulu. I came to economics from natural science (biology, chemistry, physics), not mathematics. It was inevitable I would be drawn to the beauty of philosophy as a theoretical discipline while being driven, as a post-Independence Indian, to economics as the practical discipline that might unlock secrets to India’s prosperity and progress. I belonged to an ancient family of political men, and my father, who had joined India’s new foreign service the year before I was born, inculcated in me as a boy an idea that I had “a mission” (though he later forgot he had done so).

I was fortunate to fail to enter Oxford’s PPE and instead go to the London School of Economics. LSE was at an intellectual peak in the early 1970s. DHN Johnson in international law, ACL Day in international monetary economics, Brian Griffiths vs Marcus Miller in monetary economics with everyone still in awe of Harry Johnson’s graduate lectures in macroeconomics, Ken Wallis, Graham Mizon, JJ Thomas, David Hendry in econometrics with the odd lecture by Durbin himself – I was exposed to a fully grown up intellectual seriousness from the day I arrived as an 18 year old. Michio Morishima as my professorial tutor told me frankly that, as an Indian, I would face less prejudice in Western academia than in the private sector, and said he was speaking from experience as a fellow-Asian. He turned out to be wrong but it was wise advice nevertheless, just as wise as his requiring pupils to read Hicks’ Value and Capital (which, in our undergraduate mythology, he himself had read inside a Japanese gunboat during war).

What was relatively weak at LSE was general economic theory. We were good at deriving the Best Linear Unbiased Estimator but left unsatisfied with our grasp of the theory of value that constituted the roots of our discipline. I managed a First and was admitted to Cambridge as a Research Student in 1976, where fortune had Frank Hahn choose me as a student. That at the outset was protection from the communist cabal that ran “development economics” with whom almost all the Indians ended up. I was wholly impecunious in my first year as a Research Student, and had to, for example, proof-read Arrow and Hahn’s General Competitive Analysis for its second edition to receive 50 pounds sterling from Hahn which kept me going for a short time. My exposure to Hahn’s subtle, refined and depthless thought as an economist of the first rank led to fascination and wonderment, and I read and re-read his “On the notion of equilibrium in economics”, “On the foundations of monetary theory”, “Keynesian economics and general equilibrium theory” and other clear-headed attempts to integrate the theory of value with the theory of money — a project Wicksell and Marshall had (perhaps wisely) not attempted and Keynes, Hicks and Patinkin had failed at.

Hahn insisted a central question was to ask how money, which is intrinsically worthless, can have any value, why anyone should want to hold it. The practical relevance of this question is manifest. India today in 2007 has an inconvertible currency, vast and growing public debt financed by money-creation, and more than two dozen fiscally irresponsible State governments without money-creating powers. While pondering, over the last decade, whether India’s governance could be made more responsible if States were given money-creating powers, I have constantly had Hahn’s seemingly abstruse question from decades ago in mind, as to why anyone will want to hold State currencies in India, as to whether the equilibrium price of those monies would be positive. (Lerner in fact gave an answer in 1945 when he suggested that any money would have value if its issuer agreed to collect liabilities in it — as a State collects taxes – and that may be the simplest road that bridges the real/monetary divide.)

Though we were never personal friends and I did not ingratiate myself with Hahn as did many others, my respect for him only grew when I saw how he had protected my inchoate classical liberal arguments for India from the most vicious attacks that they were open to from the communists. My doctoral thesis, initially titled “A monetary theory for India”, had to be altered due to paucity of monetary data at the time, as well as the fact India’s problems of political economy and allocation of real resources were more pressing, and so the thesis became “On liberty and economic growth: preface to a philosophy for India”. When no internal examiner could be found, the University of Cambridge, at Hahn’s insistence, showed its greatness by appointing two externals: C.J. Bliss at Oxford and T. W. Hutchison at Birmingham, former students of Hahn and Joan Robinson respectively. My thesis received the most rigorous and fairest imaginable evaluation from them.

I had been attracted to Cambridge partly by its old reputation for philosophy, especially that of Wittgenstein. But I met no worthwhile philosophers there until a few months before I was to leave for the United States in 1980, when I chanced upon the work of Renford Bambrough. Hahn had challenged me with the question, “how are you so sure your value judgements promoting liberty blah-blah are better than those of Chenery and the development economists?” It was a question that led inevitably to ethics and its epistemology — when I chanced upon Bambrough’s work, and that of his philosophical master, John Wisdom, the immense expanse of metaphysics (or ontology) opened up as well. “Then felt I like some watcher of the skies, When a new planet swims into his ken; Or like stout Cortez when with eagle eyes, He star’d at the Pacific…”

It has taken me more than a quarter century to traverse some of that expanse; when I returned to Britain in 2004 as the Wincott Visiting Professor of Economics at the University of Buckingham, I was very kindly allowed to deliver a public lecture, “Science, Religion, Art and the Necessity of Freedom”, wherein I repaid a few of my debts to the forgotten work of Bambrough and Wisdom — whom I extravagantly compared with the Bodhisattvas of Mahayana Buddhism, also saying that the trio of Wittgenstein, Wisdom and Bambrough were reminiscent of what Socrates, Plato and Aristotle might have been like.

I had written to Bambrough from within Cambridge expressing my delight at finding his works and saying these were immensely important to economics; he had invited me to his weekly discussion groups at St John’s College but I could not attend. Between 1979 and 1989 we corresponded while I worked in America on my application of his and Wisdom’s work to problems in economics. We met only once when I returned to Cambridge from Blacksburg for my doctoral viva voce examination in January 1982. Six years later in 1988 he said of my Philosophy of Economics, “The work is altogether well-written and admirably clear”, and on another occasion he said he was “extremely pleased” at the interest I had taken in his work. The original preface of Philosophy of Economics said he was not responsible for the use I had made of his writings, which I reiterated in the 2004 lecture. At our meeting, he offered to introduce me to Wisdom who had returned to Cambridge from Oregon but I was too scared and declined, something I have always regretted since. It is only in the last few years that I have begun to grasp the immensity of Wisdom’s achievement in comprehending, explaining and extending the work of both Wittgenstein and Freud. His famous “Virginia Lectures” of 1957 were finally published by his admirers with his consent as Proof and Explanation just before his death in 1993. As for Bambrough, I believe he may have been or become the single greatest philosopher since Aristotle; he told me in correspondence there was an unfinished manuscript Principia Metaphysica (the prospectus of which appeared in Philosophy 1964), which unfortunately his family and successors knew nothing about; the fact he died almost in obscurity and was soon forgotten by his University speaks more about the contemporary state of academic philosophy than about him. (Similarly, the fact Hahn, Morishima and like others did not receive the so-called Economics “Nobel” says more about the award than it does about them.)

All I needed in 1980 was time and freedom to develop the contents of this book, and that I found in America — which I could not have done in either Britain or India. It would take eight or nine very strenuous years before the book could be written and published, mostly spent at Virginia Polytechnic Institute (1980-1985) and the University of Hawaii (1986-1990) Economics Departments, with short interludes at Cornell (Fall 1983) and Brigham Young (1985-86). I went to Virginia because James M. Buchanan was there, and he, along with FA Hayek, were whom Hahn decided to write on my behalf. Hayek said he was too old to accept me but wrote me kind and generous letters praising and hence encouraging my inchoate liberal thoughts and arguments. Buchanan was welcoming and I learnt much from him and his colleagues about the realities of public finance and democratic politics, which I quickly applied in my work on India, published in 1984 in London as Pricing, Planning & Politics: A Study of Economic Distortions in India and republished elsewhere here. The visit to the Cornell Economics Department was really so I could talk to Max Black the philosopher, who represented a different line of Wittgenstein’s students, and Max and I became friends until his death in 1988.

Buchanan’s departure from Blacksburg led to a gang of inert “game theorists” to arrive, and I was immediately under attack – one senior man telling me I was free to criticise the “social choice” work of Amartya Sen (since he was Indian too) but I was definitely unfree to do the same of Sen’s mentor, Kenneth Arrow, who was Jewish! (Arrow was infinitely more gracious when he himself responded to my criticism.) On top of that arose a matter of a woman, fresh off the aeroplane from India, being assaulted by a senior professor, and when I stood for her against her assailant, my time in Blacksburg was definitely up.

The manuscript of this book was at the time under contract with University of Chicago Press, and, thanks to Mrs Harry Johnson there, I had come in contact with that great American, Theodore W. Schultz. Schultz, at age 81, told me better to my face what the book was about than I had realised myself, namely, it was about economics as knowledge — its subject-matter was the epistemology of economics. Schultz wrote letters all over America on my behalf (as did Milton Friedman at Stanford and Sidney Alexander of MIT, whom I had also met and become friends with), and I was able to first spend a happy year among the Mormons at Brigham Young, and then end up at the University of Hawaii where I was given responsibility for the main graduate course in macroeconomics. I taught Harry Johnson-level IS-LM theory and Friedman-Tobin macroeconomics and then the new “rational expectations” vs Keynesian material.

I was also offered a large University grant to work on “South Asia”, which led to the books Foundations of India’s Political Economy: Towards an Agenda for the 1990s, and Foundations of Pakistan’s Political Economy: Towards an Agenda for the 1990s, both created by myself and WE James, and which led to the origins of India’s 1991 economic reform and the India-Pakistan peace process as told elsewhere. Also, this book came to be accepted for publication by Routledge, as the first economics book in its famed International Library of Philosophy.

Just as I was set to be evaluated for promotion and tenure at the University of Hawaii, I became the victim of a most vicious racist defamation (and there was some connection with Blacksburg). Quite fed up with the sordidness of American academia as I had experienced it, I sued in the federal court, which consumed much of the next half dozen years as the case worked its way through the United States Supreme Court twice. Milton Friedman and Theodore Schultz stood as expert witnesses on my behalf but you would not have known it from the judge’s ruling. There had been not only demonstrable perjury and suborning of perjury by the State of Hawaii’s officers, there was also “after-discovered” evidence of bribery of court-officers in the US District Court for the District of Hawaii, and I had to return to India in 1996 quite exhausted to recuperate from the experience. “Solicitation of counsel, clerks or judges” is “embracery curialis”, recognized as extrinsic fraud and subversion of justice since Jepps 72 E R 924 (1611), “firmly established in English practice long before the foundation” of the USA, Hazel Atlas, 322 US 238 (1943). “Embracery is an offense striking at the very foundation of civil society” says Corpus Juris 20, 496. A court of equity has inherent power to investigate if a judgement has been obtained by fraud, and that is a power to unearth it effectively, since no fraud is more odious than one to subvert justice. Cases include when “by reason of something done by the successful party… there was in fact no adversary trial or decision of the issue in the case. Where the unsuccessful party has been prevented from exhibiting fully his case, by fraud or deception practised on him by his opponent, as…where an attorney fraudulently or without authority assumes to represent a party and connives at his defeat; or where the attorney regularly employed corruptly sells out his client’s interest to the other side ~ these, and similar cases which show that there has never been a real contest in the trial or hearing of the case, are reasons for which a new suit may be sustained to set aside and annul the former judgment or decree, and open the case for a new and a fair hearing….” (Hazel Atlas). There is no time-limit in United States federal law for rectification of fraud on the court of this sort, and I remain fully hopeful today of the working of American justice in the case.

The practical result was that this book was never able to be properly publicized among economists as it would have been had I become Professor of Economics at the University of Hawaii by 1992 as expected. The hardback sold out quickly on its own steam and went into paperback by 1991, and a friend told me it was being used for a course at Yale Law School. The reviews were mostly intelligent. Upon returning to Britain as the Wincott Visiting Professor in 2004, I found times had changed and so had Routledge who would not keep it in print let alone permit a second revised edition. But I am now free to republish the book as I please, and today in 2007, with the Internet growing to a maturity which allows the young geeks at WordPress.com to want to encourage blogging worldwide, I can think of no more apt place to reproduce the first edition of this book than here at my own blog www.independentindian.com.

This is not a second or revised edition, and it is unchanged in content except for this lengthy new preface made necessary by the adventures and dramas the book’s author found himself unwittingly part of since its first publication. I am 52 now and happy to say I endorse the book just as I had published it at 34, though I do find it a little impatient and too terse in a few places. The 1991 paperback corrected a few slight errors in the 1989 hardback, and has been used. I am planning an entirely new book which shall have its roots in this one though it will be mostly in philosophy and not economics — the outlines it may take may be seen in the 2004 public lecture I gave on the work of Bambrough and Wisdom mentioned above and published elsewhere; its main aim will be to uncover for new generations the immense worth there is in their work which is in danger of being lost.

At least two names failed to appear in the original list of acknowledgements. G. Bruce Chapman, now of the University of Toronto, and I talked much of serious ethics and political philosophy when I first arrived at Cambridge in 1976. And in 1980 in Blacksburg, Anil Lal, then a graduate student and house-painter, borrowed my copy of Bambrough’s work, read it, and later made a comment on the metaphysics of John Wisdom which allowed me to see things more clearly.

Ballygunge, Kolkata,
April 7 2007

TO: R.A.R.

Contents

Preface

1. Introduction

Part I

2. Hume and the Economists

3. Understanding the Consensus

4. Difficulties with Moral Scepticism

Part II

5. Objectivity and Freedom

6. Expertise and Democracy

Part III

7. An Example from Microeconomics

8. A Dialogue in Macroeconomics

9. Mathematical Economics and Reality

10. Remarks on the Foundations of Welfare Economics

Envoi

Notes and References

Select Bibliography

Preface to First Edition
The publication of this work marks the end of an adventure of more than a decade and a half, most of the writing being done between 17 December 1980 and 22 May 1987. It has been quite perilous at times, especially as a foreigner in the West, and over the years many teachers, colleagues, friends and members of family have contributed to the author’s learning with their thoughts and actions. A number of senior scholars in economics and philosophy — especially Professor Frank Hahn, Professor James Buchanan, Professor Sidney Alexander, Professor Milton Friedman, Professor Max Black, Professor Sidney Alexander, Professor Amartya Sen, Professor Peter Bauer, Professor T. W. Hutchison and Dr C. J. Bliss, have lent their support to the work as it developed, even when they may have not known of its final form, or disagreed with its content, or been themselves a subject of its criticism. Most especially, the work has been honoured in the last six years with the unwavering encouragement of Professor T. W. Schultz of the University of Chicago. And Professor Ted Honderich of University College London has shown it the kindest consideration, without which publication would have been much delayed. Finally, a large philosophical debt will be seen to be owed to the work of Mr. Renford Bambrough of St. John’s College, Cambridge; however he should not be considered responsible for the use that has been made here of his writings.
HONOLULU
15 AUGUST 1988.

1. Introduction

1. IN this book, some of the central philosophical questions facing the modern economist will be raised. Most attention will be given to the question of the appropriate relationship between the positive and the normative, as well as to its parent question of the appropriate scope of objective reasoning in the making of evaluative judgements. Closely related is the question of the appropriate role of the economic expert in society, while slightly more distant questions have to do with the significance of interpersonal comparisons of utility, with the philosophical status of the concepts and theorems of mathematical economics, and with how judgements of probability should be understood. It is this family of questions which will be the concern of the present work.

Economics is a science with potentially important practical bearing upon the lives of men and nations. The state of the modern world may have been affected more profoundly and subtly by the use or misuse of economic knowledge than by many another science. Yet anyone familiar with the intellectual history of the field will know it to have seen more conflicts, and often conflicts of a more destructive kind, than may be reasonably expected or tolerated in the development of a scholarly discipline. The reader will be familiar with the many explicit and implicit divisions of opinion that have occurred upon theories and methods and evidence and policies, which have sometimes torn apart individual university departments and even threatened the integrity of the science itself. Indeed the modern economist in a despondent mood might be inclined to say of the state of his discipline as David Hume once said of philosophy: “There is nothing which is not the subject of debate, and in which men of learning are not of contrary opinions. The most trivial question escapes not our controversy, and in the most momentous we are not able to give any certain decision. Disputes are multiplied, as if everything was uncertain, and they are settled with the utmost warmth, as if everything was certain.”
At the same time as there have been deep and persistent divisions on substantive questions of economic theory and method and evidence and policy, there has been a deliberate or inadvertent consensus about the answer to an important question in the theory of knowledge. Modern economists happen to have been practically unanimous in their opinion on the possible scope of objective reasoning in the making of judgements, and thus in their opinion on the appropriate relationship between the positive and the normative. A broad consensus has developed to the effect that while common reasoning can have some scope in evaluative discussion, it is quite possible in practice and in principle for this scope to become exhausted. At such a point of the exhaustion of reason, only sheer and unadulterated subjective differences will be found to remain between people. Put another way, it has been believed possible for judgements ultimately to become immune to rational question and criticism.
Many of the pioneers of twentieth century economic thought, Kenneth J. Arrow, Milton Friedman, F. A. Hayek, Sir John Hicks, Oskar Lange, Gunnar Myrdal, Lionel Robbins, Joan Robinson, Paul Samuelson, Joseph Schumpeter, Jan Tinbergen, to name but a few, who between themselves would represent all of the main schools of contemporary economics, may be found to have shared such a thesis in the theory of knowledge, differing amongst themselves only upon the relatively minor question of the precise amount of room reasoning should be considered to have: some saying a great amount, others saying almost none, but all agreeing that whatever the exact amount it is a finite amount, both actually and potentially. The theory of demand, the theory of macroeconomic policy, the theory of welfare economics, the theory of social choice — each has in whole or in part rested upon an epistemological premise of this kind. If such a consensus can be shown to have existed, the reader may agree it to be something of a remarkable fact, since it would be difficult indeed to find a single substantive proposition of theory or method or evidence or policy to which a similar measure of consensus among modern economists might obtain.
One of the objects of the present work will be to argue that the fact there have been tremendous disharmonies on substantive economic questions, may not be independent of the fact there has been this kind of harmony in the theory of knowledge among many of the pioneers of twentieth century economics as well as the many more who have followed them. If the epistemological point hitherto accepted as true happens in fact to be false, it becomes possible that the scope of objective reasoning on substantive questions has been artificially prevented from being extended as far as it could have and should have been. Evaluative judgements are clearly of indefinite variety: attitudes towards goods or people, expectations of the future, recommendations to buy or sell, advice to a friend or a student or a government, etc. — roughly, all judgements taken by an individual or social agent about a right or optimal course of action in given circumstances. We shall find the consensus has been that it is possible for reasoning to come to a necessary halt in the process of coming to such judgements, whether the maker of the judgement is a public body or a private individual acting in the capacity of consumer or voter. A large amount (and possibly the whole amount) of what may deserve to be within the domain of common and objective reasoning comes to be placed instead under the rule of subjective will and caprice. Not only must we live with the fact that discussions between citizens or economists or politicians or spouses or states do frequently come to end without resolution, because there happens to be a lack of patience or tolerance or perseverance or good humour or whatever, but also that such outcomes may be written into the script from the start. In any normative discussion, we are to be permitted to call a unilateral halt merely by declaring “Well that is a value judgement of mine” or “That is a personal opinion of mine”, with the implication that any further questioning is out of bounds and unacceptable. Given a theory which allows us in this way to declare as we please what to call objective science and what to call subjective opinion, and given that it may be but human nature to be sceptical of the other fellow’s dogma while being oblivious to one’s own, we may have some explanation of how the consensus among economists in the theory of knowledge may have caused and preserved a state of affairs in which rival substantive dogmas can thrive — because the processes of common reasoning and even communication itself may have been allowed too often to come to a virtual standstill. (Or move at a snail’s pace.) “Disputes are multiplied, as if everything was uncertain, and they are settled with the utmost warmth, as if everything was certain.”
The gist of the present work will be that the present consensus in the theory of economic knowledge is logically inconsistent. It is therefore untenable and deserves to be abandoned. Men can aspire to, and in fact do attain and possess, certain and objective knowledge in an indefinite number of contexts. At the same time, there is no proposition of any kind held by anyone which must be thought of as necessarily closed to further question on grounds of reason or evidence. This simple maxim is something that may be found to hold in any field of human inquiry or endeavour one cares to mention — mathematics or medicine, ethics or physics, history or probability, logic or theology — and it will be our purpose in this work to examine its consequences in the context of economics in particular.

§2. Our study is one in what may be called theory of economic knowledge, and it may be worth a moment to consider what may be meant by this.
Bertrand Russell said of pure mathematics that it was a subject “in which we do not know what we are talking about” — meaning that the pure mathematician does not normally intend to refer in his theorems to substantive factual truths about the world. The epistemology or theory of knowledge of a discipline may be thought of similarly as being not concerned with either affirming or denying, corroborating or refuting the substantive propositions that happen to be made within the discipline. The study of the theory of economic knowledge may be thought of as not making any commitment one way or another to the substantive propositions which are to be found within the department of economics itself. Instead it is a more abstract undertaking, which seeks to examine certain kinds of questions from outside the department in the practical hope of dissolving or at least clarifying the character of substantive questions and controversies that may be occurring within. For example, to ask whether a criterion of truth and falsity can be applied to economic propositions, or whether objective knowledge is possible in the field, or how the kinds of propositions made in economics are to be justified, or how they compare and contrast with propositions made in other departments of inquiry — these would be the kinds of question we might see asked in the theory of economic knowledge; from which too the importance can be seen of generally abstaining from making substantive commitments in the process.
Much of the present work, especially Parts I and II, may be understood to be an attempt to provide a theory of economic knowledge of this kind. Thus the reader will not find in it commitments made to any substantive economic propositions. There is no theorem reported of the existence or efficiency of some new kind of economic equilibrium, no new model or evidence offered of the influence of the supply of money on prices, no new theory of how the expectations of economic agents may be formed or fulfilled or disappointed, no new evidence or explanation of why some country may be experiencing rapid growth or high inflation or increasing unemployment. No new result within economic science; one might almost say, nothing substantive! The present work will offer no more than “a machine to think with” on certain philosophical aspects of economics; it intends to leave economics as it is — and yet in so doing to have shown the way out of some of the philosophical difficulties that are encountered in its study. “For the clarity that we are aiming at is indeed complete clarity. But this simply means that the philosophical problems should completely disappear.”
Yet the practical purpose to making an investigation of this kind may be stated quite readily. For suppose, for sake of argument, we granted the truth of our simple maxim and assumed the epistemological concepts ‘knowledge’ and ‘doubt’, and their allied concepts ‘objectivity’ and ‘freedom’, should not be seen as incompatible in the project of inquiry. What consequences would follow from accepting such a viewpoint? Clearly first of all, we would be placed in a happy position of being able to say that no matter how deep or persistent the actu