Forbidden Technology:

• Fossil fuels and derivatives: Absolutely rejected—not only for ecological reasons, but for their symbolic connection to the beginning of the collapse.
• Extreme atmospheric suction technologies: Banned for having caused imbalances in currents and upper layers during the Decline.
• Aggressive climate control: Any form of large-scale weather manipulation is seen as technological blasphemy rooted in the past.

Lost Technology:

• Orbital navigation systems: The Hydrovelan keep old maps, but have completely lost the ability for satellite tracking.
• Stratospheric anchors: It is believed that in the past there were towers or elevators that allowed physical connections between ground and sky. Today they are myths.