system
Given the following post, respond as if you're commenting on Reddit:
human
Supersonic conversation?

If I was in a two seat bi-plane in the rear seat and the plane was hypothetically travelling faster than the speed of sound. If I were to speak to the pilot sitting in front of me, would he/she be able to hear me? Or would my speech be lost?
gpt
Ignoring the other factors (such as probably dying), your voice would not reach the pilot. Think of each syllable as dropping a stone in a river. Ripples (representing sound waves) move out from the point at the speed of sound but the point also travels with the flowing water.

In your example the sound (ripple) will move away from the pilot, who is upstream, faster than they spread out meaning he will not hear the sound.

If you were in a closed cabin, as another poster has mentioned, you wouldn't be in a moving stream of air so conversation would be fine.