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A comment on Could an Industrial Civilization Have Predated Humans on Earth?. Parent comment
Casting iron(copper) is relativly easy and powerful.
Experiment with hot things in fire and you will discover it after a while.
"Why couldn’t they have use some natural form of biodegradable materials?"
Like bones for bows and spears? Humans did that, but metal is apparently more effective and useful.
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Casting iron(copper) is relativly easy and powerful.
Experiment with hot things in fire and you will discover it after a while.
"Why couldn’t they have use some natural form of biodegradable materials?"
Like bones for bows and spears? Humans did that, but metal is apparently more effective and useful.