Telepathy

Telepathy was the transmission of information from one person to another without using physical sensory channels or physical interaction.

Most species encountered by Sillage had telepathic abilities of varying degree, and the strongest among them formed the ruling class of the convoy.

Humans from the planet Earth were the only known species with no measurable psi abilities, making them completely immune to the influence of telepaths. For that reason, Nävis, the first human encountered by Sillage, was trained to become a special agent for the Constituante.