THOUGHTS 1

30/01/2019

FILOGENIA AND ONTOGENIA
Anaxagoras and Aristotle were right when they said: "man is intelligent because he has hands" and "man has hands because he is intelligent".
Phylogenetically and ontogently the hands go according to the bipedal position that allowed the conquest of the planet: tools, weapons, vehicles, forms of communication, that is to say everything, it has depended on coordinating brain and hands.
* General and Child Psychiatrist, Faculty of Medicine, Technological University of Pereira, Mental Hospital

The child "manipulates" the world: he touches, caresses, explores his body and what
surround, suck your fingers, sculpts and catches (1). The use of the right or left hand,
or the ability to be right-handed or left-handed, is a matter of degree. In all societies there have been lefties, but all have tended to be right-handed. Numerous socio-anthropological studies have also shown that ancient cultures, even the extinct ones, were right-handed. Dextrality that could not be explained, as well as the dominance of the left cerebral hemisphere is more common (even in the majority of left-handed people). ).
The cave paintings show human faces with the gaze directed to the left (artistic tendency of right-handed to draw facial profiles to the left.)
Primitive paintings show human figures holding utensils and weapons in their right hands.
We share with chimpanzees the characteristic of being the only mammals to have a dominant hand.