Know-How to build a bicycle wheel WindMill.
People will use them to charge their cell phones and laptops in the first years after Darkness...
Darkness? I assume we are talking about these skiles only in light of (in the darkness of, to be more accurate) end of electricity-known-world.
When I knock the door of some Amish community and say
- Good day, I am willing to work for food - I am afraid I might find there Bill Gates and Houellebecq /writing a dystopia about world run by toasters/ like the kings of Amish-corrupted community...
One should learn everything a beaver knows, plus to take some courses at night school about Edison inventions...
Then, there are martial arts, when the bunnches of hungry people start to plunder the world...
Nop, I can read this thread only in the connection with the end of the world and loss of electricity.
Which I by-the-way - spent on Malta in order to save myself... 😉