Hand by the ability to be brought opposite to the fingers, a muscle action known as opposition. The skeleton of the human hand consists of 27 bones: the eight short carpal bones of the wrist are organized into a proximal row (scaphoid, lunate, triquetral and pisiform) which articulates with the bones of the forearm, and a distal row (trapezium, trapezoid, capitate and hamate), which articulates with the bases of the five metacarpal bones of the hand. The heads of the metacarpals will each in turn articulate with the bases of the proximal phalanx of the fingers and thumb. These articulations with
A Treatise of Human Nature our nearest and dearest cannot explain the universal and impartial nature of justice. Thus there is no motive capable of making justice count as a virtue, not until certain social conventions come into place. Hume closes this section by adding that we evaluate motives largely by comparison with what we consider to be normal human psychology, and that the rules of justice are so "obvious" and "necessary" an invention that they can still be deemed "natural" to the human species. Hume next devotes an important and lengthy section to two questions: First, how is the social convention of justice established?