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3Dec

When is it acceptable to lie? The ethics of negotiation

Hosted by the Department of Philosophy, Logic and Scientific Method and LSE Press
In-person public event (LSE campus, venue tbc to ticketholders)
Thursday 3 December 2026 6.30pm - 8pm

When negotiating, is it acceptable to lie? What about lying just a bit? Don’t we at least have a right to lie about the highest price we are prepared to pay, or the lowest we are prepared to accept? And in negotiations, to what extent are we obliged to consider the outcome for the ‘other side’? Is it acceptable to exploit another’s extreme vulnerability to ‘drive a hard bargain’?

These are questions we face regularly in careers and personal lives, and yet there is little discussion of them in ethical terms: what is right, fair, morally acceptable. In his new book, A Fair Bargain: The Ethics of Negotiation, which our speakers will discuss at this event, Charles Sherwood sets out to answer these questions. Through philosophical rigour, provocative thought experiments, and applied real-life business situations, Sherwood develops a theory of negotiation as a social construct, designed to promote cooperative behaviour based on mutual consent. In doing so, he locates the fairness of a negotiation not in some abstract, objectively fair, single solution, but in the negotiating process itself.

Meet our speakers and chair

Marta Coelho is Professor of Management and holds a BSc and an MSc in Economics, as well as a PhD in Behavioural Economics from LSE. Marta opted early on for a career in academia which she has complemented with consulting engagements in her chosen fields of research. Over time, her research interests started distancing themselves from the assumption of pure rationality in decision making. The implications of irrationality, and notably of unrealistic optimism, on private and public sector decision making including in negotiation contexts fascinate her and are the focus of her work.

John Kennedy has worked in the music industry for more than 40 years. Starting as an entertainment Lawyer, he went on to be chairman and CEO of Universal UK and then Universal International before becoming a Founder Trustee of the Band Aid Trust with Bob Geldof. At every stage of his career, the art of negotiation has played a crucial role.

Charles Sherwood spent 30 years in the private equity industry as a Founder Partner of Permira. He has served on the boards of five public companies and a wide range of private ones. Among his various responsibilities, he was one of Permira’s most experienced negotiators. He has studied and conducted research on negotiation ethics at LSE, where he is now a lecturer and graduate teacher on the popular Business & Organisational Ethics course.

Alex Voorhoeve is Vice President and Pro Vice Chancellor for Faculty Development and Professor in the Department of Philosophy, Logic and Scientific Method and in the School of Public Policy.

More about this event

The Department of Philosophy, Logic and Scientific Method was founded by Karl Popper in 1946 and is renowned for a type of philosophy that is both continuous with the sciences and socially relevant.

LSE Press is a non-profit, open access publisher of the social sciences. It publishes high quality, peer reviewed books and journals, all available free of charge, that shape the academic debate, influence public policy and contribute to the broader conversation.

This book, A Fair Bargain: The Ethics of Negotiation, is free to read and download from the LSE Press website. Physical copies can be purchased from third-party retailers.

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