The title is a bit over dramatic but, per the title, if you could contribute with one piece of knowledge to a book that every single individual should learn in order to kickstart a civilization?
My personal choice would be the process of soap making, from scratch.
What would be your contribution?
You mean like the civilization starter kit, when the lights go out, the manual for civilization, or the knowledge, how to build civiliazation in the aftermath of a cataclysm?
Interesting, Thanks. I will be reading these further.
Thought I should mention that the second link is not working for me.