Progress was not always slow. Consider ancient Egypt. First pharaoh was in about 3100 BC, but Egypt did not build pyramids until about 2670 BC [1]. Then boom, i

Progress was not always slow. Consider ancient Egypt. First pharaoh was in about 3100 BC, but Egypt did not build pyramids until about 2670 BC [1]. Then boom, in just 100 years they constructed the Great Pyramid of Giza [2]. In 100 years the advanced from a step pyramid that was 62 m tall (quite impressive in itself) to one that was almost 150 m, and which stood as the tallest building for almost 4000 years. No matter how you look at it, those 100 years between 2670 BC and 2570 BC experienced a technological leap comparable with the Industrial Revolution. [1] https://en.wikipedia.org/wiki/Pyramid_of_Djoser https://en.wikipedia.org/wiki/Pyramid_of_Djoser [2] https://en.wikipedia.org/wiki/Great_Pyramid_of_Giza https://en.wikipedia.org/wiki/Great_Pyramid_of_Giza