With the paddle of humanity
The struggle for life is the base of the persistence of the species. The animals which, at the origin of the World, populated our sphere, had to fight against the external aggressions but to fight also inside even of their clan to survive, procreate, perdurer. The assets of the survivors were the force, sometimes the easy way or the trick, sometimes protections with which nature had provided them. It was the instinct of self-preservation or of prevalence which guided their actions.
By a phenomenon of genetic change extraordinary, the man made his appearance and developed his creative intelligence. It is thanks to the tool, the weapon, fire, and the intelligence which it could initially fight against all the threats of nature, that it then managed to ensure its subsistence but also, alas, that it faced its similar. Thus was born, with humanity, the practice of the combat as well with naked hands as with weapons then, later, the war and the strategy.
next : A l'aurore de la notion d'aïki.