While the Apocalypse – Blog

We made sand think: this phrase is used from time to time to evoke the particular technological wonders of our age, especially since artificial intelligence seems to be back on the slate of possibilities. While there would be no Silicon Valley without silica sand, semiconductors are hardly the first marvel humanity has forged out of that kind of material.

Consider the three millennia of history behind the traditional Japanese sword, long known even outside the Japanese language as the katana (literally “one-sided blade”) — or, more to the point of the Veritasium video above, the 1,200 years in which such weapons have been made out of steel. How Japanese Masters Turn Sand Into Swords

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