And there is so much taken for granted.. how long did it take us to get to the table of elements, their properties and the knowledge of where to find them, the

And there is so much taken for granted.. how long did it take us to get to the table of elements, their properties and the knowledge of where to find them, the knowledge of how to manipulate electricity.. the tools to regain knowledge, a microscope and a telescope.. and simple ancient things, such as what is the best form for a house under given conditions. Farming possibilities, storing, transportation.. Everything stacks, and to get to a thing like pure aluminium or plastic has taken ages. In case of a breakdown it is good to leave pointers to restarters. I understand that this is what the article talks about and not the notion of 'noble civilization' as opposed to savagery.