Critique of Practical Reason and Technical Reason

One reason why the Critique of Pure Reason is so much longer than the Critique of Practical Reason is that absent from the latter is an analysis of Action that is as detailed as that of Cognition in the former.  While the former explains how concepts and sense-information interact, the latter takes the interaction of concepts and motor activity for granted. In other words, he recognizes no difference between intending to act on a maxim and successfully acting on a maxim, which might be no problem for evaluation in service of Theologically-based conventional Morality, but it leaves a Critique of Practical Reason incomplete.  At the heart of what is missing is a Practical correlate of Schematism, i. e. an explanation of how a Maxim that has been adopted does in fact guide behavior, and how uncertainties in that implementation might affect evaluation.  For example, someone in extreme pain might lack the ability to resist suicide, to cultivate their talents, or to promote the happiness of others, therefore rendering them non-virtuous, and, hence, unworthy of happiness.  The Practical correlate of Schematism that would fill that gap is Technical Reason, a kin of Practical Reason either as its general case, or as an instance of it, as has been previously discussed.  But including an analytic of Technical Reason potentially alters the scope of what constitutes Totality for Practical Reason, and how a deity might be involved.  For, there is an uncertainty in such an analytic, i. e. in the gap between Intention and Actualization. Accordingly, filling that gap is required for achieving Totality, and if a deity must be invoked by Practical Reason, it is for filling the gap, which, indeed, occurs in conventional religion whenever someone petitions their deity for 'strength' to accomplish something.  But, in that case, the goal of Practical Reason is Actualization, and its principle is Sufficiency.  This is a scope of Practical Reason that is different from Kant's, in which the principle is Practical Necessity, i. e. Duty, and the goal is Happiness in proportion to obedience to that principle.