Who
Question · Eridian chord · 누구
In the Eridian chord language from Andy Weir's Project Hail Mary, the concept who (누구) is spoken as a 3-note chord rather than spelled out letter by letter. Eridians communicate by sounding musical notes simultaneously, so “who” is heard as F4, A4, D5, played with a rising pitch, over 0.5 seconds.
▶ Play “who” in the translator| English | who |
|---|---|
| Korean (한국어) | 누구 |
| Category | Question |
| Chord | F4A4D5 |
| Frequencies | 349.23, 440.00, 587.33 Hz |
| Notes in chord | 3-note, rising pitch |
| Duration | 0.5 seconds |
How “who” sounds in Eridian
“who” is built from 3 notes — F4, A4, D5 (349.23, 440.00, 587.33 Hz) — sounded for 0.5 seconds. The chord rises in pitch as it plays — a contour this translator reserves for questions. It belongs to the question category, which collects question words and conversational responses. In English it covers who; in Korean it maps to 누구.
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