[hosepipe]

What a concept.. What you SEE is determined by what comes out your mouth as heard by the ear.. A twist on the observer problem.. Air sonar, A variation of the water sonar.. of cetaceans, some seals, and probaby penquins..

[Alamo-Girl]

Thanks for the ping!

[Grizzled Bear]

What a concept.. What you SEE is determined by what comes out your mouth as heard by the ear..

Something like "Dare Devil?"