This book contains around of a score of essays that examine or use Popperis fallibilist philosophy of science from various points of view. The opening sextet includes a new solution of the problem of induction, the status of corroboration, and the place of truth-values and logic(s). Then follow a trio of studies of relationships with some other philosophies, especially Bertrand Russellis. Next come five essays on the history and historiography of science and mathematics, and of mathematics education. They are followed by a quintet of speculations relating to aspects of psychology, especially...