There is a striking difference between the way conditioning takes place in the world of flora and fauna, and the way conditioning takes place with humans.
For example, caterpillars/butterflies in their evolution adapted themselves to changing conditions by altering their own physical condition; humans on the other hand have been altering their own physical condition to a much lesser extent, e.g. instead of developing wings, flippers, grizzly bear nails, hooves, more protective fur, etc. they lost most of their fur, definitely did not grow hooves and invented external implements like airplanes, boats knives, forks, chopsticks, space heaters, UV protection lotions, shoes, boots, etc.
This difference between how humans and other life forms responded to conditions or altered them, has "from the get go" made human existence very different from the existence of everything else, but as we shall see in upcoming sections, that may not necessarily have been a good thing, especially in regards to one particular type of conditioning.
From as much as four hundred thousand years ago the earliest representatives of homo sapiens – apparently more so than any other non humanoid creatures – were able to compare their own individual condition in fine detail with what they observed in the living and non-living environment around them.
One way or another (which is not the topic of these discussions) they acquired the skill to take careful and detailed stock of what that environment contained and they learned to use a variety of the inventoried items from that environment in a rather novel way.
Unlike other creatures who alongside humans and before them, adapted themselves physically to changes of environment, early humans (and us still) did not alter themselves physically to the same degree. In their adaptation to different or changing environments, humans resorted to the invention of tools, implements and structures: they made external changes.
Instead of keeping or increasing fur cover, they lost it in favor of clothing and eventually built themselves shelters; instead of increasing their muscular strength, they opted for instruments and strategy; instead of acquiring a different type of mobility by changing their body structure, they opted to make material shells of mobility: ships, automobiles, planes, etc. Eventually they their created bazaars, galleries and shops...