If early humans crafted a hammer or an axe from metal for example. How on earth did they craft the first tool that was used to create that hammer or axe. I know you can create a hammer from natural material like stone and an axe from a sharp piece of stone but how did they forge the first metal tools and even weapons?
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They made things incrementally, so I make x, then y then z. Y is harder than x, z is better than y. Human progression is incremental: this metal is slightly harder than that, especially if one mixes these two metals. Bang: next thing one has an alloy whereof the correct mixtures were found from Trail and Error.
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