Quentin Skinner has enduringly insisted that a past text cannot be ‘understood’ without the reader knowing something about its historical and linguistic context. But since the 1970s he has been attacked on this central point of all his work by authors maintaining that the text itself is the fundamental guide to the author’s intention, and that a separate study of the context cannot tell the historian anything that the text itself could not. Mark Bevir has spent much of the last twenty years repeating a similar counter-argument. Although ‘study the linguistic context’ might be a useful heuristic maxim, Bevir says, it does not express a necessary or sufficient condition for understanding. But Skinner is right, and one of the figures he has consistently identified as a formative inspiration, R. G. Collingwood, has already (in his work of the 1930s) shown why. What Collingwood calls his ‘logic of question and answer’ explains why the historian cannot answer his characteristic ‘intention’ question about past texts without knowing the context of problems to which authors think they are offering solutions. The study of context is neither ‘prior’ (as Bevir incorrectly supposes) nor ‘separate’ (as Skinner inaccurately says), but it is, as Skinner maintains, nevertheless impossible to grasp an author’s intention without it. This ‘logic of question and answer’ also explains why, in history, dismissing the study of context is in fact a prejudgement of evidence yet unseen.