Just in case we get thrown back into the Stone age – here are some videos to memorize

This guy show how you can build a house, make tools and weapons without any modern tools.

House

Bow and arrow

Knife (sort of)

Iron from sand

And many more on his channel:

https://www.youtube.com/channel/UCAL3JXZSzSm8AlZyD3nQdBA

Who knows? Might come in handy.

h/t Emergency Patriot Hologram