they made a branch where one side is defective and the other isn't they only follow the non-defective side one day a week because perl doesn't forward analyze

they made a branch where one side is defective and the other isn't they only follow the non-defective side one day a week because perl doesn't forward analyze, it never sees the error on other days, and doesn't fail the presentation is false. this code is always wrong. it's just that the bug is only visible under certain conditions.