1. Mindy Chen-Wishart, BA (Hons) LLB, MA, Barrister and Solicitor; Fellow in Law, Merton College; Reader in Contract Law, Oxford University; Professor of Law, National University of Singapore. My thanks to the Otago University Seminar, the University of Sydney-National University of Singapore Symposium, and the Hong Kong University Hochelaga Lecture Seminar for responses to this paper. Thanks also to Timothy Endicott and the anonymous referees for their helpful comments.