There is a lot to learn from the history of technology, but I think the real explanations are: - People working across thousands of years for independent and p

There is a lot to learn from the history of technology, but I think the real explanations are: - People working across thousands of years for independent and poorly understood reasons, that set up combinations of circumstances that suddenly clicked in to place. (Initial breeding of animals and plants for agriculture, mathematicians unknowingly laying the groundwork for mathematical sciences.) - People working to further their own immediate interests. (Every industrial development.)