Reviews that keep widening, retries for what you missed, and two optional sets
Finished lessons now come back after 1, 3, 7, 30, 90 and 180 days, so the review pile stops growing all year, and a lesson you recall after a long gap jumps ahead. The Profile page lists the questions you missed and offers them again. Stage checkpoints have eight questions and can be failed: fewer than seven right on the first try names the lessons to review. Each week ends with a “Which tool?” question that sets two earlier ideas against each other. Two optional bonus sets are new: Shapes of argument (if-then, all and some, either-or, expected value, how much evidence should move you) and Rights and the wider world (rights, toleration, republican liberty, cosmopolitanism, global justice, anarchism, feminist political philosophy). Search now finds the fallacy pages, and the day after a lesson asks whether you tried its “Try this today”.