So as not to confuse the previous post I'll state here that
I believe many people confuse intelligence and technology.
Technology is the combined sum of human experience and its
manisfestation in tools and machines. Intelligence is largely
the ability to solve problems mostly at the individual level.

Just because no or extremely few ancient Egyptians had a con-
cept of the wheel doesn't mean that they might not devise one
to solve a particular problem. While they were familiar with
magnetism they did not understand its cause any more than out
best physicists today.

Since they did understand basic concepts on an individual lev-
el each could use this knowledge for basic jobs whether that was
figuring out how to drink water from a cup or cause an event to
occur after he was in another location.

They had only "primitive" technology and only a few hundred years
of writing. They did not have high strength steel cable but they
did have rope. They didn't have telephones but they could commu-
nicate with mirrors or at the top of their lungs.

In my experience a man with a little knowledge and the will can
accomplish more than a thousand men with modern tools who don't
care or don't understand the tools.

It's always been so and the pyramids appear testament to it.

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Man fears the pyramid, time fears man.