Obligatory echolocation bit:

https://www.youtube.com/watch?v=a05kgcI9D2Q

https://www.youtube.com/watch?v=lAtVOK04XvA

Invisibilia's episode was my first exposure to it.

https://www.npr.org/programs/invisibilia/378577902/how-to-be...

The man posits that clicking is instinctual for blind people but they are told to quiet down in class and most never develop their echolocation abilities

Wow. Thank you.