When we look at the history of new technologies, we tend to think of only our most recent past. But more than a thousand years ago, blacksmiths succeeded in making a set of ultra-strong swords — that are tricky to re-create even today.
When we look at the history of new technologies, we tend to think of only our most recent past. But more than a thousand years ago, blacksmiths succeeded in making a set of ultra-strong swords — that are tricky to re-create even today.
