Maybe they don't make sense to us but ultimately, it might have a deeper function or sense with respect to its inherent nature.
As we are the perceivers/observers of reality. Kind of like the "if a tree falls in the woods and nobody hears it does it make a sound" question.
It makes a wavelength/vibration, but sound requires sensing. I agree with most of the posts here. Sense is something done by an observer. Nature does its thing and we do our best to make sense of it using the senses we're given.
Yup. But we call it a sound once this vibration is sensed by our ears. Otherwise it's just a vibration that nothing sensed.