We have historical evidence of pocket knives that are about 3000 years old: https://coolmaterial.com/roundup/the-history-of-the-pocket-knife/ https://coolmateri

We have historical evidence of pocket knives that are about 3000 years old: https://coolmaterial.com/roundup/the-history-of-the-pocket-knife/ https://coolmaterial.com/roundup/the-history-of-the-pocket-k...