For generations, since the time of Darwin’s heralded theory of evolution in the late 1800s: we have search for defining moments in our evolution that allowed us to become the homo sapiens sapiens that we are today. Anthropologists and evolutionary biologists have searched for why humans are unique. When we compare ourselves to other primates, there are distinct differences in physiology, diet and culture.
From our most distant relatives of ardipithecus ramidus, Australopithecus afarensis, and moving through to homo habilis, homo erectus, homo neanderthalensis, homo sapiens and finally homo sapiens sapiens–scientists and common people have wondered: what allowed us to change and gain abilities our ape cousins can only dream of.
In early hominid species such as ardipitecus ramidus and australopithecus afarensis diet consisted of what could be forged. They were still largely nomadic and in the time of A. ramidus and A. afarensis bipedalism was introduced. These early hominid species survived on a meager diet of fruit, nuts and if they were lucky meat they could scavenge off the savannah.
These early species spent time on both the ground and in the trees. However, A. afarensis spent more time in a bipedal mode than their cousin A. ramidus would have. Regardless, a great deal of energy was required to forage for food. It was an activity carried out by both males, females, young and old. Furthermore, to meet even basic nutrient requirements it is theorized that these early hominid species would have spent most foraging for and digesting food. From a physiological perspective, the amount of energy that would be required to extract the nutrients from raw foods would be immense.
Advancing technology with Homo Habilis through to Homo Neanderthalensis; coupled with full implementation of bipedalism with Homo Erectus allowed many adaptations in the hominid line. However, it is theorized by Professor Richard Wrangham, a biological anthropologist that the ability to produce fire and alter what and how we ate was the catalyst to make our ancestors more human.
While the date for the first use of fire differs among experts in this field ranging from dates of 1.8 million years ago to a mere 800,000 years ago it is a sheer fact fire allowed positive molecular changes in what we eat. Professor Wrangham has published a book, entitled: ” Catching Fire: How Cooking Made Us Human”. He suggests that because cooking changed the amount of calories and nutrients available to the body, this caused great leaps forward in species evolution, clan structure and culture. Furthermore, he suggests that because of the increase of available calories, and the reduction of caloric output due to digestion: this energy could be used elsewhere in the body and potentially could have been a driving force to increase our mass, brain size, and in essence everything we identify in being human beings.
Also, theorized in his book is how this change in food preparation with the introduction of cooking fostered societal structure change. With the male of the species forgoing gathering food, and instead hunting whereas the female remained in hearth cooking and gathering food. This Wragham purposes created distinct gender roles, that over time became hired wired into our species and in some aspects are still observed today.
Well, I have always personally pondered how the ability to produce fire and into turn the most likely accidental discovery of the benefits of cooked food. It is interesting to see scientists purposing theories with that in mind. From a culinary anthropological view it proves interesting, in that mid way through our evolution nature set the stage for improved diet and strove to strongly initiate gender roles. Physiological this changed us in size, abilities, actual brain size/capacity. It allowed our species of homo sapiens via our ancestors to surpass homo neanderthalensis. Though one must ask as Professor Wranghman ponders, what were the sociological implications across the generations of this lucky culinary advancement.
If you are interested in Professor Wrangham’s book please buy a copy or visit your local library!
BJV










