Posted: May 10, 2018 9:23 am
It's plausible to the extant our ear canal is a vestige of our ancient breathing apparatus (It's a gill-slit which hasn't fully closed) so I'd be open to it still serving a function.
Lifeboat for the rational mind :D
http://www.rationalskepticism.org/
http://www.rationalskepticism.org/viewtopic.php?p=2630548#p2630548