Empirical considerations should play a more pervasive role in constructing theories of implication than has hitherto been the case. It will be argued that constructing theories of implication is essentially an interdisciplinary undertaking, in which logicians (philosophical logic), linguists (pragma-linguistics) and experimental psychologists (reasoning psychology) cooperate. I will close with some tentative remarks on the implications for what it can mean to take a pluralistic stance in logic.