Abstract
Jaakko Hintikka's contribution to the theory of questions has been an important one, not only because it has extended one approach to the logic of questions but also because it has stimulated much work in other areas. Hintikka has cross-fertilized the areas of epistemic logic and erotetic logic, and has argued persuasively that results in erotetic logic are relevant to the theory of English grammar.1 Hintikka's views about questions, including his view that there is only one proper way to analyze them, have had considerable influence on linguists.2
