Signals

Everyone thought these helmets were Roman until scientists uncovered the truth

Researchers have solved a decades-old mystery by showing that a cache of 43 helmets found off the Spanish coast is medieval, not Roman. The remarkable discovery exposes a thriving weapons trade network that connected Mediterranean powers during a time of piracy, warfare, and growing demand for…

Attribution as a function of expectations—for decades, everyone "saw" Roman helmets because they expected to find them. A classic example of theory-dependent observation.
Source: https://www.sciencedaily.com/releases/2026/06/260606075515.htm

Related articles