Beyond that there’s been a considerable amount of research about our ability to estimate room size/material/shape while blindfolded just based on the reverberation of sounds in the space.

Oversimplified conclusion, untrained humans are really good at it.

Yup, I specifically use y’all and recommend it to people (like my parents) to replace gendered phrases, and I’m not from the y’all zone.

Still up for debate, “dude” and “hun/hon”.

*I’m a trans woman also