Thumb, Mind, Evolution

With a small increment, a line can be transformed into a plane figure, e. g. a curve into a circle.  Similarly, a small increase in the length of an ape's thumb enables touching between the tips of thumb and other fingers.  As a result, a hand with unprecedented capacities to not merely touch an object, but to enclose, flexibly grasp, and manipulate it, emerges.  So, the Evolutionary development that originates the Human species is both homogeneous and a leap.  Furthermore, on the basis of Spinoza's Mind-Body Parallelism, a Mind that does not merely register the existence of an object, but imposes Form on registered data, in preparation for modifying an object, is another emergent from the small increase in the thumb ape.  In other words, Mind as Formal Cause, a concept entertained by Aristotle, and revived by Kant, is a novelty in the Evolutionary origination of the Human species.