However, because of this instinctive ability, humans also came to categorize other humans - in other words, stereotyping them - the moment they laid eyes on them.
Primitive as these weapons may have been, they gave early humans a huge advantage in hunting for calorie-rich meat and for defending themselves from predators or other humans.
The ratios of contributions, the procedures, and other details would properly be within the scope of the "private conversations" I have referred to earlier.
Some regions of the world are well supplied with coal and minerals, and have a fertile soil and a favourable climate; other regions possess none of them.