The Utility and Futility of ‘No Oral Variation’ Clauses: When Commercial Certainty Meets Party Autonomy - Business Law Review View The Utility and Futility of ‘No Oral Variation’ Clauses: When Commercial Certainty Meets Party Autonomy by - Business Law Review The Utility and Futility of ‘No Oral Variation’ Clauses: When Commercial Certainty Meets Party Autonomy 37 4 Business Law Review