Understand
Question · Eridian chord · 이해, 이해하다, 알다
In the Eridian chord language from Andy Weir's Project Hail Mary, the concept understand (이해, 이해하다, 알다) is spoken as a 4-note chord rather than spelled out letter by letter. Eridians communicate by sounding musical notes simultaneously, so “understand” is heard as C4, F4, A4, C5, over 0.5 seconds.
▶ Play “understand” in the translator| English | understand, know |
|---|---|
| Korean (한국어) | 이해, 이해하다, 알다 |
| Category | Question |
| Chord | C4F4A4C5 |
| Frequencies | 261.63, 349.23, 440.00, 523.25 Hz |
| Notes in chord | 4-note |
| Duration | 0.5 seconds |
How “understand” sounds in Eridian
“understand” is built from 4 notes — C4, F4, A4, C5 (261.63, 349.23, 440.00, 523.25 Hz) — sounded for 0.5 seconds. The notes sound together as a single steady cluster. It belongs to the question category, which collects question words and conversational responses. In English it covers understand, know; in Korean it maps to 이해, 이해하다, 알다.
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