Hand, Tool, Form

To modify Aristotle's analogy, the hand is not only the "tool of tools", it is the "Form of Forms", as well.  For, the most primitive occurrence of Formal Causality is the shaping of some material so that it can be grasped by the hand, i. e. the hand is the original Shape, prior to geometrical figures.  Thus, the aptly named handle, adapted to the contours of the hand in order for a tool to be usable, is the link between the two characterizations of the hand.  Now, Comprehension is distinguishable from other seemingly synonymous Mental operations, e. g. Understanding, as etymologically related to the functioning of the hand.  Thus, Comprehension, in its proper meaning, connotes a concept of Mind as fundamentally Practical, e. g. the Comprehension of the Idea of the Good is equivalent to knowing how to use it, rather than to merely looking at it.  Similarly, Spinoza's Adequate Idea, which entails Causal knowledge, is a product of Comprehension.