Homo
habilis had a brain about half
the size of ours, but that was a significant increase over the
various ape-like species that preceded them. Habilis
was the smartest ape of its time. (They lived concurrently with other
closely-related species of bipedal apes.) Habilis—the
toolmaker handyman—had not yet invented the formidable weapons that
follow-on pre-humans would, so they still did not occupy the top
predator slot in Africa. They remained occasional meals for fierce
animals like lions and tigers. But their improving tools were on the
way to making them dominant.
Handy
man's succeeding species was Homo erectus,
which later led directly to us. Homo erectus (“upright
man”) further developed tools and even may have used fire to cook.
It lived in groups that were the predecessor to bands of human
hunter-gatherers.
This
evolving process of our ancestors becoming increasingly skilled tool
makers and weapons forgers led directly to Homo sapiens becoming
the dominant species on planet Earth. These implements, conceived of
by our growing brain and manipulated by our erect posture and very
dexterous hands, made us the formidable critters we've become.
There's been an increasingly rapid evolution of tools ever
since—right up to our current sophisticated machines and robots of
today. Our tools have made us top dog.
The
first tools of Homo habilis were used to cut up meat, to break
bones to get at the nourishing marrow, and thus diversify their diet
beyond fruits and insects. When Homo erectus took the next
step by manufacturing weapons, it could begin to assume the top
predatory spot on the savanna. Spears and arrows enabled them to
confront the fiercest animal.
Those
early weapons were employed primarily for hunting, but they were also
useful to attack or defend themselves from other roving bands of
pre-humans—who were looked upon as alien critters that must be
confronted and conquered. The tribal circle was very small and when
another band was encountered, it was regarded to be as threatening as
any other large predator.
Our
weapons have continued to evolve and have become truly daunting.
While our modern tools may have served us well, it's another story
for our modern weapons. We now possess the power to inflict massive
harm and kill many thousands of people at one blow... and we do. Our
weapons of mass destruction—nuclear bombs, chemical weapons,
drones, and similar armaments—can do damage far beyond what our
ancestors could ever have imagined.
More
on tools and weapons next time...
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