Abstract
Projectual abduction is the inference drawing the means to achieve an end. Planning a course of action is an inferential task and we claim that the relevant inference is abduction. We distinguish projectual abduction from epistemic abduction. While epistemic abduction aims to determine an explanatory relation, projectual abduction aims to determine a teleological relation. It is important to remind in any case that abduction does not stand by itself: as is true for epistemic abduction, projectual abduction has to be developed and evaluated by subsequent deduction and induction. After defining projectual abduction in section 1, we focus on the relations between projectual abduction, normativity and truth in section 2. Then we sketch how projectual abduction works in artistic creativity , in evolutionary and teleological processes and finally in social processes