Comprehensive reasoning from end to means requires an initiating intention to bring about some goal, along with five premisses: a specified means would immediately contribute to realization of the goal, the goal is achievable, the means is permissible, no alternative means is preferable, and the side effects do not outweigh the benefits of achieving the goal. Its conclusion is a decision to bring about the means. The scheme can be reiterated until an implementable means is reached. In a particular context, resource limitations may warrant truncation of the reasoning.