유리를 깨뜨려도 잘못이 아닌 이유

Glass is the ultimate chipped stone tool material. I'm not the only one who claims this. Even the indigenous people who actively used chipped stone tools acknowledged it. "This is... exactly like obsidian?" With glass, anyone in the 21st century can make chipped stone tools. However, there's a sad truth about glass chipped stone tools. I'll share the story of an American Native American who enjoyed using glass, and show you how to transform glass into wonderful chipped stone tools and weapons.