Augustus would quickly capture you if you produced black powder. Tiberius would torture you for the formula and then kill you and nearly everyone who he suspected you might have given the formula to.
In the reign of the emperor Tiberius (14-37 AD) a Roman glassmaker demonstrated a remarkable new glass at the imperial court. Unlike ordinary glass, it did not break: it must have seemed almost supernatural. The event was recorded by contemporary writers Pliny and Petronius. They called his glass vitrum flexile (flexible glass). The craftsman displayed a beautiful transparent vase to the emperor and then dashed it to the ground. According to the story, it dented but did not break. Tiberius asked if the glassmaker had told the secret of unbreakable glass to anyone else. When the answer was in the negative, the emperor had the unknown genius put to death and his workshop destroyed fearing that the new material would reduce the value of his imperial gold and silver.
Pliny (NH 36, 66) makes it pretty clear that he does not believe in vitrum flexile. He starts his short account by stating “They say” or “There is a story.” The only thing he says about the glass is that it was flexible. He then says that the glassmaker’s entire workshop was destroyed so that the value of copper, silver, and gold wouldn’t suffer [because people acquired flexible glass instead]. Pliny comments that the story is more frequently told than it is reliable.
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Not surprisingly, no example of Roman vitrum flexile is known to exist.
Augustus would quickly capture you if you produced black powder. Tiberius would torture you for the formula and then kill you and nearly everyone who he suspected you might have given the formula to.
See:
Yes, that’s a cool story, but it’s not like innovation stopped in the Roman empire.
Is this story considered likely true? Did he invent plastic?
Apparently, Pliny himself was skeptical.
I’m not sure.