Contact record
Tarvan
First contact 2152 · contact established, no lexicon
Signal-layer modulation. First contact 2152, mathematical-only communication for 15 years before conversational exchange became possible.
Contact established; no word-list. This is the normal case, not a failure.
Physiology
Silicon-composite biochemistry. Pressure-adapted. Modular sensory organs.
Structure
Compressed mathematical-symbolic prose pre-2180. Conversational compressed-grammar from 2200 onward. PMK confidence ceiling: 82%.
Contact protocol
Mathematical bootstrap - a shared reference frame built token by token.
Why no vocabulary table
Tarvan-human exchange proceeded through mathematical proofs for the first 15 years. Vocabulary in the human sense does not apply — concepts are transmitted as compressed symbolic structures that the PMK renders into approximate English.