The phonautograph’s inventor intended visual transcription, not playback

Evidence

The contraption provides a reasonably faithful record of pressure as a function of time, the first sound trace. Edouard-Leon Scott de Martinville made the phonautograph. A Parisian typesetter and inventor, he apparently had no intent of playing the sounds back, nor perhaps even the conception of doing so. For Scott, the recording was a kind of instant stenography, intended to remain in visual form. — Eric J. Heller, Why You Hear What You Hear- An…, 459

Categorization

• QUESTION: Scott’s conception gap — inventing sound recording without imagining playback — raises the question of how assumptions about a medium’s purpose constrain what inventors can build.
• SEED: Article angle: how the intended purpose of an invention shapes whether it is seen as revolutionary — Scott’s stenography framing vs. Edison’s playback framing.
• DEEPTHINKING: A paradigm case of instrumental vs. constitutive goals: Scott built a device that fully captured sound pressure over time but lacked the conception to play it back — a striking illustration of how purpose frames capability.