Top 10 Most Impressive Lost Technologies

Flexible Glass

During the 1st century AD, one very skilled Roman glassmaker managed to invent flexible glass. He then brought a drinking bowl made from this material to Tiberius, who then threw it to the floor. The material actually dented instead of shattering, and the dent could be repaired very easily using only a hammer. When Tiberius saw this, he checked if the inventor was the only one who knew how to make flexible glass, and afterwards had him beheaded, in fear that the material would undermine the value of silver and gold.

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