The fubarnii revere their Engineers as the creators of their current freedom. Most Engineers hide themselves away, toiling on random projects. Mixing chemicals and working materials to generate tiny fancies or great machineries. Some of the more foolhardy Engineers choose to put themselves at risk to test their inventions, and it is often the job of the local militia to escort these eccentrics back to their homes.

Source: Twilight Chapter 1 - from Slaves to Emperors