"You seem to know a lot about us, humans who wield psionic energy..."
A voice seemed to rise in everyone's minds. The Protoss wielded psionic energy themselves, and in the past they had been able to maintain a natural connection with one another. Their communication was far more efficient than humanity's.
The famed Trisolarans were, in some ways, rather similar to the Protoss.
Later, as individuals matured and their personal thoughts grew more pronounced, their connection collapsed. This even led to the Protoss of Aiur erupting into the Aeon of Strife, leaving countless dead and wounded.
But in the end, a Protoss named Sawa Se'n found the artifact known as the Ky'darim Crystal, left behind by this universe's gods, the Xel'Naga. It restored the connection between the Protoss.
The Dark Templar, who had been rejected and even hunted by the main body of the Protoss on Aiur, were heretics who refused to join that network.
Even when disconnected, however, the Protoss could use their skilled control of psionic energy to form a temporary connection with other life-forms. They simply couldn't probe as deeply.
Tassadar was using this very method. The processing was so efficient that everyone could understand him directly, without converting his meaning into sounds and words. For a moment, everyone aboard the Archangel felt a little dazed and entranced.
Human brains generated consciousness, then used neural electrical signals to control the vocal cords and produce "coded" language. The sound traveled through the air's vibrations to another person's ears, where their brain had to process it again to "decode" and understand it. The process was actually quite inefficient.
It was like looking at a stack of documents and entering them by hand on a keyboard.
By comparison, telepathy was like transferring data directly, skipping every intermediate step.
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