

The federal legislature is one of the worst. They do a ton of awful shenanigans. I would support a constitutional amendment to ban all of those practices.
Bills can have only one subject. The subject needs to be the title. The title cannot be changed.
Those three rules block at least 90% of federal legislative nonsense.
The point of my reply was to debunk what you said. I’ve not read that text and I am no expert. I can only speculate.
If you know that sound is caused by something vibrating, as was known, and you also know that when something moves through air it pushes the air away, you can reasonably conclude that sound is a vibration in the air caused by a vibration in an object.
But I don’t know how he came to that conclusion, or what, of any he ran experiments he ran to show it.
My point is that anyone saying you need a microphone to learn about acoustics are talking nonsense. You have to already understand acoustics to even build the first microphone.